7x^2-7x-84=

Simple and best practice solution for 7x^2-7x-84= 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 7x^2-7x-84= equation:


Simplifying
7x2 + -7x + -84 = 0

Reorder the terms:
-84 + -7x + 7x2 = 0

Solving
-84 + -7x + 7x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '7'.
7(-12 + -1x + x2) = 0

Factor a trinomial.
7((-3 + -1x)(4 + -1x)) = 0

Ignore the factor 7.

Subproblem 1

Set the factor '(-3 + -1x)' equal to zero and attempt to solve: Simplifying -3 + -1x = 0 Solving -3 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + -1x = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -1x = 0 + 3 -1x = 0 + 3 Combine like terms: 0 + 3 = 3 -1x = 3 Divide each side by '-1'. x = -3 Simplifying x = -3

Subproblem 2

Set the factor '(4 + -1x)' equal to zero and attempt to solve: Simplifying 4 + -1x = 0 Solving 4 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -1x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1x = 0 + -4 -1x = 0 + -4 Combine like terms: 0 + -4 = -4 -1x = -4 Divide each side by '-1'. x = 4 Simplifying x = 4

Solution

x = {-3, 4}

See similar equations:

| -2y=10x+16 | | (3x+5)(x+3)=7 | | 6x-y+5=180 | | 7x-248+x+44=180 | | 30-4x=14 | | 5(x-7)=2(2-2x)-3 | | [9(x+5)-16]+[3(x-2)+4]= | | x+8-1/3=90/11 | | 2x^2+8x-192=0 | | 3x+(x*x)=180 | | 0.06(10-x)(100)= | | x^2-5x=x(5+x) | | x^2-5x=x(5x) | | 2x+55=272 | | (4y-7)+(-2y+5)= | | 2/5(x+3)=6 | | 3x+7-8(x+2)=-36 | | N(N-3)=700 | | 23-4x=9 | | 16x^4-54x= | | 9w-28=2 | | 4a-4=4x+4-2x | | 4t^2-16t+7=0 | | x^7+64x^4=0 | | 3y^2+17y-28= | | 6a+a-9=30 | | 7-5a=17 | | 2(4a+3)=8+6(2a-3) | | 8x-32=-8(4-5x) | | 7(3x-4)=59 | | 3x+-4=14 | | 2y+50+5y-17=180 |

Equations solver categories