x^2-3x-7=11

Simple and best practice solution for x^2-3x-7=11 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 x^2-3x-7=11 equation:


Simplifying
x2 + -3x + -7 = 11

Reorder the terms:
-7 + -3x + x2 = 11

Solving
-7 + -3x + x2 = 11

Solving for variable 'x'.

Reorder the terms:
-7 + -11 + -3x + x2 = 11 + -11

Combine like terms: -7 + -11 = -18
-18 + -3x + x2 = 11 + -11

Combine like terms: 11 + -11 = 0
-18 + -3x + x2 = 0

Factor a trinomial.
(-3 + -1x)(6 + -1x) = 0

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 '(6 + -1x)' equal to zero and attempt to solve: Simplifying 6 + -1x = 0 Solving 6 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + -1x = 0 + -6 Combine like terms: 6 + -6 = 0 0 + -1x = 0 + -6 -1x = 0 + -6 Combine like terms: 0 + -6 = -6 -1x = -6 Divide each side by '-1'. x = 6 Simplifying x = 6

Solution

x = {-3, 6}

See similar equations:

| x=37-5y | | 12a^2+17a+5=0 | | 5x+2=14-2x | | 11x^2-32x-3=0 | | ln(x+9)-ln(x-3)=lnx | | 3d^2+13d-10=0 | | 3y-7=9 | | 29+6x=-13 | | 6(4-i)=12i | | -6(4-I)=12i | | n+7n=16 | | 2y-3(8y+1)+6=0 | | 42-(x+6)=9x-4 | | u^2+19u+60=0 | | 3x^2+2x^3=0 | | -(6y+5)-(-5y-6)=-1 | | 3p=1250-5q | | 65-12x=-31 | | 0.8x-0.1=0.4x+0.7 | | 3x^2+10x-98=0 | | x^2+5x=124 | | -d^2+50-23d=0 | | 10x+20y=240 | | 12x+16y=232 | | -2x^2+6x+2=0 | | 3v^2=-11v-6 | | 9x^2-17=0 | | 2x^2+7x+5=13 | | 2n(2n-20)=2 | | (5x-11)-(4x-3)=10 | | 2x^2+78=0 | | (-9)+14= |

Equations solver categories