(5x^2-4+7)+(-4x^2+3x-5)=

Simple and best practice solution for (5x^2-4+7)+(-4x^2+3x-5)= 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 (5x^2-4+7)+(-4x^2+3x-5)= equation:


Simplifying
(5x2 + -4 + 7) + (-4x2 + 3x + -5) = 0

Reorder the terms:
(-4 + 7 + 5x2) + (-4x2 + 3x + -5) = 0

Combine like terms: -4 + 7 = 3
(3 + 5x2) + (-4x2 + 3x + -5) = 0

Remove parenthesis around (3 + 5x2)
3 + 5x2 + (-4x2 + 3x + -5) = 0

Reorder the terms:
3 + 5x2 + (-5 + 3x + -4x2) = 0

Remove parenthesis around (-5 + 3x + -4x2)
3 + 5x2 + -5 + 3x + -4x2 = 0

Reorder the terms:
3 + -5 + 3x + 5x2 + -4x2 = 0

Combine like terms: 3 + -5 = -2
-2 + 3x + 5x2 + -4x2 = 0

Combine like terms: 5x2 + -4x2 = 1x2
-2 + 3x + 1x2 = 0

Solving
-2 + 3x + 1x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '2' to each side of the equation.
-2 + 3x + 2 + x2 = 0 + 2

Reorder the terms:
-2 + 2 + 3x + x2 = 0 + 2

Combine like terms: -2 + 2 = 0
0 + 3x + x2 = 0 + 2
3x + x2 = 0 + 2

Combine like terms: 0 + 2 = 2
3x + x2 = 2

The x term is 3x.  Take half its coefficient (1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
3x + 2.25 + x2 = 2 + 2.25

Reorder the terms:
2.25 + 3x + x2 = 2 + 2.25

Combine like terms: 2 + 2.25 = 4.25
2.25 + 3x + x2 = 4.25

Factor a perfect square on the left side:
(x + 1.5)(x + 1.5) = 4.25

Calculate the square root of the right side: 2.061552813

Break this problem into two subproblems by setting 
(x + 1.5) equal to 2.061552813 and -2.061552813.

Subproblem 1

x + 1.5 = 2.061552813 Simplifying x + 1.5 = 2.061552813 Reorder the terms: 1.5 + x = 2.061552813 Solving 1.5 + x = 2.061552813 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = 2.061552813 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 2.061552813 + -1.5 x = 2.061552813 + -1.5 Combine like terms: 2.061552813 + -1.5 = 0.561552813 x = 0.561552813 Simplifying x = 0.561552813

Subproblem 2

x + 1.5 = -2.061552813 Simplifying x + 1.5 = -2.061552813 Reorder the terms: 1.5 + x = -2.061552813 Solving 1.5 + x = -2.061552813 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = -2.061552813 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -2.061552813 + -1.5 x = -2.061552813 + -1.5 Combine like terms: -2.061552813 + -1.5 = -3.561552813 x = -3.561552813 Simplifying x = -3.561552813

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.561552813, -3.561552813}

See similar equations:

| =[x-(6-4i)][x-(6+4i)] | | 35xy-5x-56y+8=0 | | 14.88=-4.8f | | 2(4x+12y)= | | 20-9w=4(5-w) | | 2.54= | | 34a+32a= | | 5cosx-3=3cosx | | 45x^2-20=0 | | Y=2x^2+x | | 134.5= | | q+4=7.05 | | 2+0.25x=4.50 | | -16(4)=y | | ln(x-2)-ln(x+7)=ln(x-1)-ln(x+13) | | 5.6=7x | | 5(50a-25)= | | 40-2y=80 | | x=360-120-95-96-120 | | 2+0.5x=y | | 50+5x=115 | | 38+8x=126 | | 50+8x=54 | | x^46-4x^2=0 | | 8a-16a-6a-12=14 | | 65+7x=156 | | -4p=-14 | | 3(28+7y)= | | x-5=-15+6x | | 0.5x-4+1=-3-0.5x | | 3(28+7y)= | | 9h^2+48h+64=0 |

Equations solver categories