-2x(x+3)-3x=7x+8

Simple and best practice solution for -2x(x+3)-3x=7x+8 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 -2x(x+3)-3x=7x+8 equation:


Simplifying
-2x(x + 3) + -3x = 7x + 8

Reorder the terms:
-2x(3 + x) + -3x = 7x + 8
(3 * -2x + x * -2x) + -3x = 7x + 8
(-6x + -2x2) + -3x = 7x + 8

Reorder the terms:
-6x + -3x + -2x2 = 7x + 8

Combine like terms: -6x + -3x = -9x
-9x + -2x2 = 7x + 8

Reorder the terms:
-9x + -2x2 = 8 + 7x

Solving
-9x + -2x2 = 8 + 7x

Solving for variable 'x'.

Reorder the terms:
-8 + -9x + -7x + -2x2 = 8 + 7x + -8 + -7x

Combine like terms: -9x + -7x = -16x
-8 + -16x + -2x2 = 8 + 7x + -8 + -7x

Reorder the terms:
-8 + -16x + -2x2 = 8 + -8 + 7x + -7x

Combine like terms: 8 + -8 = 0
-8 + -16x + -2x2 = 0 + 7x + -7x
-8 + -16x + -2x2 = 7x + -7x

Combine like terms: 7x + -7x = 0
-8 + -16x + -2x2 = 0

Factor out the Greatest Common Factor (GCF), '-2'.
-2(4 + 8x + x2) = 0

Ignore the factor -2.

Subproblem 1

Set the factor '(4 + 8x + x2)' equal to zero and attempt to solve: Simplifying 4 + 8x + x2 = 0 Solving 4 + 8x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-4' to each side of the equation. 4 + 8x + -4 + x2 = 0 + -4 Reorder the terms: 4 + -4 + 8x + x2 = 0 + -4 Combine like terms: 4 + -4 = 0 0 + 8x + x2 = 0 + -4 8x + x2 = 0 + -4 Combine like terms: 0 + -4 = -4 8x + x2 = -4 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 = -4 + 16 Reorder the terms: 16 + 8x + x2 = -4 + 16 Combine like terms: -4 + 16 = 12 16 + 8x + x2 = 12 Factor a perfect square on the left side: (x + 4)(x + 4) = 12 Calculate the square root of the right side: 3.464101615 Break this problem into two subproblems by setting (x + 4) equal to 3.464101615 and -3.464101615.

Subproblem 1

x + 4 = 3.464101615 Simplifying x + 4 = 3.464101615 Reorder the terms: 4 + x = 3.464101615 Solving 4 + x = 3.464101615 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 = 3.464101615 + -4 Combine like terms: 4 + -4 = 0 0 + x = 3.464101615 + -4 x = 3.464101615 + -4 Combine like terms: 3.464101615 + -4 = -0.535898385 x = -0.535898385 Simplifying x = -0.535898385

Subproblem 2

x + 4 = -3.464101615 Simplifying x + 4 = -3.464101615 Reorder the terms: 4 + x = -3.464101615 Solving 4 + x = -3.464101615 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 = -3.464101615 + -4 Combine like terms: 4 + -4 = 0 0 + x = -3.464101615 + -4 x = -3.464101615 + -4 Combine like terms: -3.464101615 + -4 = -7.464101615 x = -7.464101615 Simplifying x = -7.464101615

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.535898385, -7.464101615}

Solution

x = {-0.535898385, -7.464101615}

See similar equations:

| 9x^4y^2-18xy+8=0 | | 4x+1.5x=10 | | 3X^5-21X^3+30x^2+15X-2= | | 3X^5-21X^3+30x^2+15X-2=0 | | (X+5)8x= | | 20x-y=47 | | -3i-0.04=21.29 | | 4p+n=18 | | f(x)=9x+9 | | 2y+-4x=8 | | 6+3b+1=-11 | | 10n-9(n-5)=4(n-4)-5 | | 637x+658=1846 | | 6x^2-12x-18=192 | | 4x(x-9)(x-6)=0 | | 7n^2+14n-105=0 | | -2(.50+3)=4(.50)-3 | | -8d=200 | | ln(4x+5)= | | -(2x+5)-1=2(x+1) | | 30=10x+40 | | -30i=22.5 | | a^2=695 | | 2(2m+5)=m+13 | | xy+2x+3x^2=8 | | 4k+1=17 | | 14+21n=28 | | 10x=20whatisx | | 22x-8-18x+3=18x-4-14x+14 | | 5.8x+1=4.8x | | 6x+6-8x=14-16x+14x-8 | | 3x-4=9x |

Equations solver categories