(4x+5)(x-9)=0

Simple and best practice solution for (4x+5)(x-9)=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 (4x+5)(x-9)=0 equation:


Simplifying
(4x + 5)(x + -9) = 0

Reorder the terms:
(5 + 4x)(x + -9) = 0

Reorder the terms:
(5 + 4x)(-9 + x) = 0

Multiply (5 + 4x) * (-9 + x)
(5(-9 + x) + 4x * (-9 + x)) = 0
((-9 * 5 + x * 5) + 4x * (-9 + x)) = 0
((-45 + 5x) + 4x * (-9 + x)) = 0
(-45 + 5x + (-9 * 4x + x * 4x)) = 0
(-45 + 5x + (-36x + 4x2)) = 0

Combine like terms: 5x + -36x = -31x
(-45 + -31x + 4x2) = 0

Solving
-45 + -31x + 4x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-5 + -4x)(9 + -1x) = 0

Subproblem 1

Set the factor '(-5 + -4x)' equal to zero and attempt to solve: Simplifying -5 + -4x = 0 Solving -5 + -4x = 0 Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + -4x = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -4x = 0 + 5 -4x = 0 + 5 Combine like terms: 0 + 5 = 5 -4x = 5 Divide each side by '-4'. x = -1.25 Simplifying x = -1.25

Subproblem 2

Set the factor '(9 + -1x)' equal to zero and attempt to solve: Simplifying 9 + -1x = 0 Solving 9 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -1x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -1x = 0 + -9 -1x = 0 + -9 Combine like terms: 0 + -9 = -9 -1x = -9 Divide each side by '-1'. x = 9 Simplifying x = 9

Solution

x = {-1.25, 9}

See similar equations:

| 10m+3n-4m+9n= | | 108-7x=11x+22 | | 14a+19b+3c+3c-5b-5a= | | 20p+16q+p-6q-4p= | | -3x(x-4)=0 | | 10m+3n-4m+9M= | | a/8+7=15 | | 3(6x-1)=33 | | 6a+1=43 | | x^2-5x=5x | | 4l-23=3l+4 | | (x-3)2=0 | | 4=6b-5+4 | | k=fa | | 10-(7x-2)+1=8 | | (6x+9)(x^2-4x+5)= | | 7*7=2x | | (3+2x)(1-x)= | | 7-2=2x | | x+1=75*5 | | 142-2x=43x+17 | | -77-10x=10x+23 | | (3+2x)=(1-x) | | 4x+101=8x-7 | | 1x+55=22x | | 173-5x=13x+21 | | 14-9x=32-16x | | -135-9x=8x+15 | | 2x+6-5=10x | | 3y+10+5y=20-2 | | 5x+190=14x-8 | | 81-5x=8x+15 |

Equations solver categories