7x^2-21x-196=

Simple and best practice solution for 7x^2-21x-196= 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^2-21x-196= equation:


Simplifying
7x2 + -21x + -196 = 0

Reorder the terms:
-196 + -21x + 7x2 = 0

Solving
-196 + -21x + 7x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '7'.
7(-28 + -3x + x2) = 0

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

Ignore the factor 7.

Subproblem 1

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

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 = {-4, 7}

See similar equations:

| 4x+y=31 | | 96=x+(x-4) | | y^2-y-140=0 | | (u-2)(u-2)=2u^2+2-u | | 2x-(x+3)= | | -3[m]=-9 | | 6/x=5/x-1 | | 32+4a=9(6a+3) | | .25=(x-1540)/1540 | | D=1/4fk | | (4n+6)-(2n-3)= | | 8(n+9)= | | secx=4 | | 2w^2+w-36=0 | | [x]-10=-2 | | 5x^2+18x+2=0 | | M^2-18m+25=8 | | -9v-6+2=32 | | 4n+6-2n-3= | | 5x+5=5(x+4) | | Y+7=3(x+3) | | [n]+3=7 | | 3(x-.08)=4x+4 | | 2(-5)-3(-10-3)+2=31 | | Y=-1/6x-1/2 | | -4y+8=4(2y+2) | | g(-7)=3x^2+5 | | Y=2/12 | | 3n-7/6 | | 9-(4y-2)=3-5y | | 8r-3+4r=-19 | | 2x^2-1x-9=0 |

Equations solver categories