2x^2-5x-126=7

Simple and best practice solution for 2x^2-5x-126=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 2x^2-5x-126=7 equation:


Simplifying
2x2 + -5x + -126 = 7

Reorder the terms:
-126 + -5x + 2x2 = 7

Solving
-126 + -5x + 2x2 = 7

Solving for variable 'x'.

Reorder the terms:
-126 + -7 + -5x + 2x2 = 7 + -7

Combine like terms: -126 + -7 = -133
-133 + -5x + 2x2 = 7 + -7

Combine like terms: 7 + -7 = 0
-133 + -5x + 2x2 = 0

Factor a trinomial.
(-7 + -1x)(19 + -2x) = 0

Subproblem 1

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

Subproblem 2

Set the factor '(19 + -2x)' equal to zero and attempt to solve: Simplifying 19 + -2x = 0 Solving 19 + -2x = 0 Move all terms containing x to the left, all other terms to the right. Add '-19' to each side of the equation. 19 + -19 + -2x = 0 + -19 Combine like terms: 19 + -19 = 0 0 + -2x = 0 + -19 -2x = 0 + -19 Combine like terms: 0 + -19 = -19 -2x = -19 Divide each side by '-2'. x = 9.5 Simplifying x = 9.5

Solution

x = {-7, 9.5}

See similar equations:

| 9e+4=14e | | x+x+x+4=16+3x | | 84=4(6b-5)+8 | | 2k^-3/k^-1*2k^4*92k^-3)^4 | | lnx^4-lnx^2=2 | | 2+10y+10-9y-7= | | a(n)=10+2(n-1) | | y^2+14y-24=0 | | 7f+10-10-3f= | | 3(n+2)+2n=21 | | 8+-7(2c+-2)= | | -108=-8k-5(k+6) | | 5x+55+x=180 | | -10(5x+3)=570 | | x-4(x)=96 | | 3t=42 | | -5.1r=10.71 | | m^2-14m+51=3 | | -6+5-4q+5-8q= | | 43+5m=-73 | | 7+4(6d+9)+4d= | | (3b-.5)xb=56.5 | | 3x-6+(-1)= | | x+7+22+34=180 | | 4c+2+5+6+6= | | (3x-.5)x=56.5 | | f(x+8)=x^2+16x+64-3x-24+4 | | -9c+-5(9+-5c)= | | a^2+18a+39=-6 | | 6(1+5n)=-174 | | 26x+2x=2x | | 2x+4=590 |

Equations solver categories