(2y^2+4y-2)-(5y^2-4y-3)=

Simple and best practice solution for (2y^2+4y-2)-(5y^2-4y-3)= equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for (2y^2+4y-2)-(5y^2-4y-3)= equation:


Simplifying
(2y2 + 4y + -2) + -1(5y2 + -4y + -3) = 0

Reorder the terms:
(-2 + 4y + 2y2) + -1(5y2 + -4y + -3) = 0

Remove parenthesis around (-2 + 4y + 2y2)
-2 + 4y + 2y2 + -1(5y2 + -4y + -3) = 0

Reorder the terms:
-2 + 4y + 2y2 + -1(-3 + -4y + 5y2) = 0
-2 + 4y + 2y2 + (-3 * -1 + -4y * -1 + 5y2 * -1) = 0
-2 + 4y + 2y2 + (3 + 4y + -5y2) = 0

Reorder the terms:
-2 + 3 + 4y + 4y + 2y2 + -5y2 = 0

Combine like terms: -2 + 3 = 1
1 + 4y + 4y + 2y2 + -5y2 = 0

Combine like terms: 4y + 4y = 8y
1 + 8y + 2y2 + -5y2 = 0

Combine like terms: 2y2 + -5y2 = -3y2
1 + 8y + -3y2 = 0

Solving
1 + 8y + -3y2 = 0

Solving for variable 'y'.

Begin completing the square.  Divide all terms by
-3 the coefficient of the squared term: 

Divide each side by '-3'.
-0.3333333333 + -2.666666667y + y2 = 0

Move the constant term to the right:

Add '0.3333333333' to each side of the equation.
-0.3333333333 + -2.666666667y + 0.3333333333 + y2 = 0 + 0.3333333333

Reorder the terms:
-0.3333333333 + 0.3333333333 + -2.666666667y + y2 = 0 + 0.3333333333

Combine like terms: -0.3333333333 + 0.3333333333 = 0.0000000000
0.0000000000 + -2.666666667y + y2 = 0 + 0.3333333333
-2.666666667y + y2 = 0 + 0.3333333333

Combine like terms: 0 + 0.3333333333 = 0.3333333333
-2.666666667y + y2 = 0.3333333333

The y term is -2.666666667y.  Take half its coefficient (-1.333333334).
Square it (1.777777780) and add it to both sides.

Add '1.777777780' to each side of the equation.
-2.666666667y + 1.777777780 + y2 = 0.3333333333 + 1.777777780

Reorder the terms:
1.777777780 + -2.666666667y + y2 = 0.3333333333 + 1.777777780

Combine like terms: 0.3333333333 + 1.777777780 = 2.1111111133
1.777777780 + -2.666666667y + y2 = 2.1111111133

Factor a perfect square on the left side:
(y + -1.333333334)(y + -1.333333334) = 2.1111111133

Calculate the square root of the right side: 1.452966315

Break this problem into two subproblems by setting 
(y + -1.333333334) equal to 1.452966315 and -1.452966315.

Subproblem 1

y + -1.333333334 = 1.452966315 Simplifying y + -1.333333334 = 1.452966315 Reorder the terms: -1.333333334 + y = 1.452966315 Solving -1.333333334 + y = 1.452966315 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '1.333333334' to each side of the equation. -1.333333334 + 1.333333334 + y = 1.452966315 + 1.333333334 Combine like terms: -1.333333334 + 1.333333334 = 0.000000000 0.000000000 + y = 1.452966315 + 1.333333334 y = 1.452966315 + 1.333333334 Combine like terms: 1.452966315 + 1.333333334 = 2.786299649 y = 2.786299649 Simplifying y = 2.786299649

Subproblem 2

y + -1.333333334 = -1.452966315 Simplifying y + -1.333333334 = -1.452966315 Reorder the terms: -1.333333334 + y = -1.452966315 Solving -1.333333334 + y = -1.452966315 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '1.333333334' to each side of the equation. -1.333333334 + 1.333333334 + y = -1.452966315 + 1.333333334 Combine like terms: -1.333333334 + 1.333333334 = 0.000000000 0.000000000 + y = -1.452966315 + 1.333333334 y = -1.452966315 + 1.333333334 Combine like terms: -1.452966315 + 1.333333334 = -0.119632981 y = -0.119632981 Simplifying y = -0.119632981

Solution

The solution to the problem is based on the solutions from the subproblems. y = {2.786299649, -0.119632981}

See similar equations:

| (67x+58y)+(-17x+32y)= | | y(22+y)= | | (35x+69y)+(32x-2y)= | | 0.37x+9.436=0.81+6.708 | | -x=0.54 | | -x(x+9)=20 | | 2(x+3)=2(x+10) | | 3u-9-4u=11 | | x^2-4x+1+4i=0 | | (12x-7)=(3x+20) | | 3x^2=420 | | (5x-2)(2x-7)=0 | | 4x^2=640 | | 5.4(27-3.78x)= | | 36+u=42-6u+u | | 15x-30=5x | | 22a+48=180 | | 15x^2=1000 | | f(n)=-4(-7)-5 | | 7p^2-57p+56=0 | | 20q-12q+2q=10 | | (4x-13)x=0 | | 9x-4(2x+6)=4x-2 | | 16x^2=-960 | | 7p-57p+56=0 | | x^2-14=7x-6 | | 5ax+15bx-ay-3by=0 | | 5/8m/8/9=21 | | 1/3x6/8 | | 6x^2=312 | | (39x-12y)+(41x+66y)= | | 16x^2=672 |

Equations solver categories