-3a^2-39a-90=0

Simple and best practice solution for -3a^2-39a-90=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 -3a^2-39a-90=0 equation:


Simplifying
-3a2 + -39a + -90 = 0

Reorder the terms:
-90 + -39a + -3a2 = 0

Solving
-90 + -39a + -3a2 = 0

Solving for variable 'a'.

Factor out the Greatest Common Factor (GCF), '-3'.
-3(30 + 13a + a2) = 0

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

Ignore the factor -3.

Subproblem 1

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

Subproblem 2

Set the factor '(3 + a)' equal to zero and attempt to solve: Simplifying 3 + a = 0 Solving 3 + a = 0 Move all terms containing a to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + a = 0 + -3 Combine like terms: 3 + -3 = 0 0 + a = 0 + -3 a = 0 + -3 Combine like terms: 0 + -3 = -3 a = -3 Simplifying a = -3

Solution

a = {-10, -3}

See similar equations:

| 5(x+2.5)=x+2.7 | | y=cst^3(5x+2) | | x+(7x+2)=8 | | 6x-12=6x+3 | | 18x^2-51x+8=0 | | 5(8f+4g-12t)= | | 23=12(6+k) | | 3+3j=9 | | 20+30x+1= | | 8xblank=48 | | 2v-2=1+3v | | 250-100/3 | | 3(5b)-7=13-(a+2) | | 25+16(p)=89 | | 4/9r=1 | | 8=07+(2) | | S=9t^2-vt | | 3x-29=2x+31 | | 11x-70=20+8z | | 62-4r=6r-18 | | -3x-10=x-2x | | 2x+20=3x+20 | | 7m-9m=13 | | 2z=8z-18 | | X=6-2x | | y-(y/x)=x-2 | | 2s-11=5 | | -93-11x=40-4x | | y-y/x=x-2 | | 0.2/100 | | 1.5/1=w/4 | | 48*8=x |

Equations solver categories