x^2-x-15=-3

Simple and best practice solution for x^2-x-15=-3 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-x-15=-3 equation:


Simplifying
x2 + -1x + -15 = -3

Reorder the terms:
-15 + -1x + x2 = -3

Solving
-15 + -1x + x2 = -3

Solving for variable 'x'.

Reorder the terms:
-15 + 3 + -1x + x2 = -3 + 3

Combine like terms: -15 + 3 = -12
-12 + -1x + x2 = -3 + 3

Combine like terms: -3 + 3 = 0
-12 + -1x + x2 = 0

Factor a trinomial.
(-3 + -1x)(4 + -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 '(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:

| 3x^3-22x^2+29x+30=0 | | 18x^2-45x=50 | | 106=-8k+6(1-7k) | | 18x^2+45x=50 | | 3(4-3n)=-15 | | 11+5(x-3)=33 | | 4x+110=(x^2+5) | | a^2+8a-38=7 | | x^2+16x-75=0 | | 15a+b+12a+10b= | | x^2+16-75=0 | | v^2-14v+27=0 | | 6.7x(-2.3)= | | 5(2x+6)=-4(-5+-2x)+3y | | 7x-43=2x+80 | | 5(x+6)=-4(-5-2x)+3y | | 11x-9x=2 | | 3x-12(1)=6 | | [-6+(-8)]+[7+(-4)]=0 | | Log(x^3-4x)= | | [-6+(-8)]+[7+(-4)]= | | log_4n=5/2 | | 18+x=89-x | | 4(16)2/10 | | x^4+5x^3-10x^2-80x-96=0 | | 4x+7(2x-5)-5(3x+1)=50 | | ln((x^3)-4x)= | | -8(y+4)-2(y-1)=70-3y | | sqrt(x+6)-sqrt(x-6)=3 | | y=2x^2-9x+11 | | 3secantx+2=8 | | 20+2y=0 |

Equations solver categories