-9x^2+42x-40=0

Simple and best practice solution for -9x^2+42x-40=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 -9x^2+42x-40=0 equation:


Simplifying
-9x2 + 42x + -40 = 0

Reorder the terms:
-40 + 42x + -9x2 = 0

Solving
-40 + 42x + -9x2 = 0

Solving for variable 'x'.

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

Subproblem 1

Set the factor '(-10 + 3x)' equal to zero and attempt to solve: Simplifying -10 + 3x = 0 Solving -10 + 3x = 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 + 3x = 0 + 10 Combine like terms: -10 + 10 = 0 0 + 3x = 0 + 10 3x = 0 + 10 Combine like terms: 0 + 10 = 10 3x = 10 Divide each side by '3'. x = 3.333333333 Simplifying x = 3.333333333

Subproblem 2

Set the factor '(4 + -3x)' equal to zero and attempt to solve: Simplifying 4 + -3x = 0 Solving 4 + -3x = 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 + -3x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -3x = 0 + -4 -3x = 0 + -4 Combine like terms: 0 + -4 = -4 -3x = -4 Divide each side by '-3'. x = 1.333333333 Simplifying x = 1.333333333

Solution

x = {3.333333333, 1.333333333}

See similar equations:

| (T-7)/-2=11 | | 4(5x-20)=80 | | w=2yz+2yz+2zx | | -8+n=-84 | | 9x=54+3x | | 2x^2+5xy+3y^2-7=0 | | 5x^2-10x=9x+4 | | 10=12-a/4 | | m^2+16m=59 | | 5x+6.5y=-3.5x+7y-15 | | 6y+4x=332 | | X^2+150x+5625=0 | | 7.3+m=20 | | 4x^2-37x-30=0 | | 10-24m+6=6m+4 | | 6a-7-11=0 | | 6(4x+5)-6=24x | | x^2-3x+41=x+12 | | 8.5x+6.5y=15 | | N+2.9=10 | | -7b-5.5+4=24.5 | | 0.35/3=c/18 | | -x^2-3x+41=x+12 | | 3+5x=-9 | | 7pq^2-5pq(2-q)=0 | | 4(x+8)-27= | | N-7=-77 | | x^2+4x+2xy-8= | | 2x^2+28+48=0 | | 13+2(5c-2)=99 | | (3x+8)+(2x+9)=(6x-3) | | x^2-4x=5x+35 |

Equations solver categories