x^2+2x+7=15

Simple and best practice solution for x^2+2x+7=15 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+2x+7=15 equation:


Simplifying
x2 + 2x + 7 = 15

Reorder the terms:
7 + 2x + x2 = 15

Solving
7 + 2x + x2 = 15

Solving for variable 'x'.

Reorder the terms:
7 + -15 + 2x + x2 = 15 + -15

Combine like terms: 7 + -15 = -8
-8 + 2x + x2 = 15 + -15

Combine like terms: 15 + -15 = 0
-8 + 2x + x2 = 0

Factor a trinomial.
(-4 + -1x)(2 + -1x) = 0

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 '(2 + -1x)' equal to zero and attempt to solve: Simplifying 2 + -1x = 0 Solving 2 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1x = 0 + -2 -1x = 0 + -2 Combine like terms: 0 + -2 = -2 -1x = -2 Divide each side by '-1'. x = 2 Simplifying x = 2

Solution

x = {-4, 2}

See similar equations:

| -21=-16+p/5 | | B=3F-24 | | 5+3(9-4)=2(q+1) | | (3y^3)-(5y^2)-2y=0 | | 3p+9=13+2p | | 2.2+-6.1= | | 51+40/8*7 | | (15v^2)+29v-14=0 | | 9x-7=14+x | | 12(x+3)+12(x-3)=3(x^2-9) | | 2/7(15x+4)=1/2(9x-26)+12 | | -(9m-7)-3m=-137 | | 8h=w | | 3(x+1)-2x+3=5x+4(x+10) | | w=8h | | (15c^2)+22c-48=0 | | 0.11x+0.9(x-2)=0.01(2x-2) | | ((2z-16)/(121))/((z-8)/(22)) | | u/11=13/17 | | 3.014x+10-2.501x=31.18 | | 4(4x+5)=19x+2 | | 37+9(9)= | | 4x^6+6x^4+14x^3= | | 99=19x-124 | | 8p-7-3p= | | x*2+16=72 | | x*3.014+(10-x)*2.501=31.18 | | 75x+15y=7500 | | 32+8m=6(m+5) | | 75x+10y=1503 | | y=7ln(7x) | | 3+3p-7= |

Equations solver categories