4x^2-16x-91=-7

Simple and best practice solution for 4x^2-16x-91=-7 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^2-16x-91=-7 equation:


Simplifying
4x2 + -16x + -91 = -7

Reorder the terms:
-91 + -16x + 4x2 = -7

Solving
-91 + -16x + 4x2 = -7

Solving for variable 'x'.

Reorder the terms:
-91 + 7 + -16x + 4x2 = -7 + 7

Combine like terms: -91 + 7 = -84
-84 + -16x + 4x2 = -7 + 7

Combine like terms: -7 + 7 = 0
-84 + -16x + 4x2 = 0

Factor out the Greatest Common Factor (GCF), '4'.
4(-21 + -4x + x2) = 0

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

Ignore the factor 4.

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 '(7 + -1x)' equal to zero and attempt to solve: Simplifying 7 + -1x = 0 Solving 7 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -1x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1x = 0 + -7 -1x = 0 + -7 Combine like terms: 0 + -7 = -7 -1x = -7 Divide each side by '-1'. x = 7 Simplifying x = 7

Solution

x = {-3, 7}

See similar equations:

| 7+4x=-25 | | 17+p=-14 | | 2x-8=3x-102 | | 5x-11x+6=0 | | 7=0.5m | | 1x+56=-6x+119 | | 3p-6=3p-p | | 5e=4.5 | | -163=7x+6(-3x-18) | | X+4(1-x)=-17 | | 9-4y-12=-10y-25 | | 8+2p=2 | | 1234326567898780-098543=g-12345678756 | | 14k+5=k+14 | | 9x+11=4+5x+2x | | (3+-9x)+9x=3 | | -8=28-5x | | -20-15y=-17 | | 2(2x+3y)(3x-4y)= | | 10g-3x+10=8 | | 2x-8=3x-120 | | -15.5=2.5+3.5(d-7) | | -6-2x=32 | | 2s+3s= | | 9f=8u+7c-21k | | 27+24x=26x-35 | | -15t^2+90t-120=0 | | -4+x/3=-5 | | -9.5=-38 | | 2v^2+3=0 | | 10x+7=3(3x+7) | | 12345+q-3=999(99+607) |

Equations solver categories