4x^2+x-2=3x^2-7x

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


Simplifying
4x2 + x + -2 = 3x2 + -7x

Reorder the terms:
-2 + x + 4x2 = 3x2 + -7x

Reorder the terms:
-2 + x + 4x2 = -7x + 3x2

Solving
-2 + x + 4x2 = -7x + 3x2

Solving for variable 'x'.

Reorder the terms:
-2 + x + 7x + 4x2 + -3x2 = -7x + 3x2 + 7x + -3x2

Combine like terms: x + 7x = 8x
-2 + 8x + 4x2 + -3x2 = -7x + 3x2 + 7x + -3x2

Combine like terms: 4x2 + -3x2 = 1x2
-2 + 8x + 1x2 = -7x + 3x2 + 7x + -3x2

Reorder the terms:
-2 + 8x + 1x2 = -7x + 7x + 3x2 + -3x2

Combine like terms: -7x + 7x = 0
-2 + 8x + 1x2 = 0 + 3x2 + -3x2
-2 + 8x + 1x2 = 3x2 + -3x2

Combine like terms: 3x2 + -3x2 = 0
-2 + 8x + 1x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '2' to each side of the equation.
-2 + 8x + 2 + x2 = 0 + 2

Reorder the terms:
-2 + 2 + 8x + x2 = 0 + 2

Combine like terms: -2 + 2 = 0
0 + 8x + x2 = 0 + 2
8x + x2 = 0 + 2

Combine like terms: 0 + 2 = 2
8x + x2 = 2

The x term is 8x.  Take half its coefficient (4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
8x + 16 + x2 = 2 + 16

Reorder the terms:
16 + 8x + x2 = 2 + 16

Combine like terms: 2 + 16 = 18
16 + 8x + x2 = 18

Factor a perfect square on the left side:
(x + 4)(x + 4) = 18

Calculate the square root of the right side: 4.242640687

Break this problem into two subproblems by setting 
(x + 4) equal to 4.242640687 and -4.242640687.

Subproblem 1

x + 4 = 4.242640687 Simplifying x + 4 = 4.242640687 Reorder the terms: 4 + x = 4.242640687 Solving 4 + x = 4.242640687 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = 4.242640687 + -4 Combine like terms: 4 + -4 = 0 0 + x = 4.242640687 + -4 x = 4.242640687 + -4 Combine like terms: 4.242640687 + -4 = 0.242640687 x = 0.242640687 Simplifying x = 0.242640687

Subproblem 2

x + 4 = -4.242640687 Simplifying x + 4 = -4.242640687 Reorder the terms: 4 + x = -4.242640687 Solving 4 + x = -4.242640687 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = -4.242640687 + -4 Combine like terms: 4 + -4 = 0 0 + x = -4.242640687 + -4 x = -4.242640687 + -4 Combine like terms: -4.242640687 + -4 = -8.242640687 x = -8.242640687 Simplifying x = -8.242640687

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.242640687, -8.242640687}

See similar equations:

| -7(5.8+q)=(-84) | | 5x^2-6x=-7x^2-30x | | 3(-7-2x)=-27 | | 2(8i+5)=3(6i+6) | | 3*x+3=2*2x+2 | | 4g-7x=1620 | | 5(m-3)=8 | | -x-3-x=21 | | 9(12a+8)=9(11a+5) | | -16=16+8b | | -x-3-x=-21 | | 19x+34=x-5+3 | | x^2-x-126=0 | | 2x+-9=3x+7 | | 12(5c-3)=10(8c+7) | | -2(2x+1)=46 | | 8s-29=-17+5s | | 2g-1=3 | | 27x-x-126=0 | | 9x^2-130x+441=0 | | (3x+9)=(4x-2) | | .25(20x+5)=100 | | 10.98x+27.98(20-x)=355.60 | | 3x+22+140=180 | | x-0.7=9.25 | | 4(2+3x)=-52 | | X(x^3-x^2-x+2)=1 | | 8-7(2-3x)-9x=4(5x-1)-3x-2 | | 6n-(5n+5)=-8-2(n+12) | | 9-4z=3-3z | | 14-7x=8x-11x-28 | | (8-x)(17-x)=66 |

Equations solver categories