-3x^2-42x-120=0

Simple and best practice solution for -3x^2-42x-120=0 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 -3x^2-42x-120=0 equation:


Simplifying
-3x2 + -42x + -120 = 0

Reorder the terms:
-120 + -42x + -3x2 = 0

Solving
-120 + -42x + -3x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '-3'.
-3(40 + 14x + x2) = 0

Factor a trinomial.
-3((10 + x)(4 + x)) = 0

Ignore the factor -3.

Subproblem 1

Set the factor '(10 + x)' equal to zero and attempt to solve: Simplifying 10 + x = 0 Solving 10 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + x = 0 + -10 Combine like terms: 10 + -10 = 0 0 + x = 0 + -10 x = 0 + -10 Combine like terms: 0 + -10 = -10 x = -10 Simplifying x = -10

Subproblem 2

Set the factor '(4 + x)' equal to zero and attempt to solve: Simplifying 4 + x = 0 Solving 4 + x = 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 + x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + x = 0 + -4 x = 0 + -4 Combine like terms: 0 + -4 = -4 x = -4 Simplifying x = -4

Solution

x = {-10, -4}

See similar equations:

| -(7y+1)-(-6y-4)=-1 | | -8x-1=-5x | | 5x^2+30x+30=0 | | 1.8q-(5.6)-(2.8q)=-2.0q-(5.3) | | (-6x+9)(-3x-15)=0 | | 3x^2+42x+120=0 | | 8m-11(x-2)=-8 | | -4(1-4n)=124 | | 11-2x=4x-9 | | 3x-18=100 | | 1.8q-5.6-2.8q=-2.0q-5.3 | | 6(2r+1)=-90 | | -5(3-7n)+7n=111 | | x/12=3 | | -4x^2+40x-52=0 | | 2x^2+36x+144=0 | | (4x^2-17x-15)(x+5)= | | 7y+7=6y-2 | | 81x=10 | | (4x^2-17x-15)(x+5)= | | -3y+6=-4y+2 | | (4x^2-17x-15)(x-5)= | | 2x=0.2 | | 7x+4=5x+20 | | 3/5(x)=15 | | z-14=-41 | | -2x+5-7(x+1)=0 | | 7a=3-b | | 2y-9=3y-1 | | 13n+2=4n+28 | | -5-(15k-1)=2(7K-16)-k | | -11+x^2=26 |

Equations solver categories