(4x+5)(x-10)=0

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Solution for (4x+5)(x-10)=0 equation: 


Simplifying
(4x + 5)(x + -10) = 0

Reorder the terms:
(5 + 4x)(x + -10) = 0

Reorder the terms:
(5 + 4x)(-10 + x) = 0

Multiply (5 + 4x) * (-10 + x)
(5(-10 + x) + 4x * (-10 + x)) = 0
((-10 * 5 + x * 5) + 4x * (-10 + x)) = 0
((-50 + 5x) + 4x * (-10 + x)) = 0
(-50 + 5x + (-10 * 4x + x * 4x)) = 0
(-50 + 5x + (-40x + 4x2)) = 0

Combine like terms: 5x + -40x = -35x
(-50 + -35x + 4x2) = 0

Solving
-50 + -35x + 4x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-5 + -4x)(10 + -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 '(10 + -1x)' equal to zero and attempt to solve:

Simplifying
10 + -1x = 0

Solving
10 + -1x = 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 + -1x = 0 + -10

Combine like terms: 10 + -10 = 0
0 + -1x = 0 + -10
-1x = 0 + -10

Combine like terms: 0 + -10 = -10
-1x = -10

Divide each side by '-1'.
x = 10

Simplifying
x = 10
Solution
x = {-1.25, 10}

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