(2x+7)(5x-2)=0

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Solution for (2x+7)(5x-2)=0 equation:


Simplifying
(2x + 7)(5x + -2) = 0

Reorder the terms:
(7 + 2x)(5x + -2) = 0

Reorder the terms:
(7 + 2x)(-2 + 5x) = 0

Multiply (7 + 2x) * (-2 + 5x)
(7(-2 + 5x) + 2x * (-2 + 5x)) = 0
((-2 * 7 + 5x * 7) + 2x * (-2 + 5x)) = 0
((-14 + 35x) + 2x * (-2 + 5x)) = 0
(-14 + 35x + (-2 * 2x + 5x * 2x)) = 0
(-14 + 35x + (-4x + 10x2)) = 0

Combine like terms: 35x + -4x = 31x
(-14 + 31x + 10x2) = 0

Solving
-14 + 31x + 10x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-7 + -2x)(2 + -5x) = 0

Subproblem 1

Set the factor '(-7 + -2x)' equal to zero and attempt to solve: Simplifying -7 + -2x = 0 Solving -7 + -2x = 0 Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + -2x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -2x = 0 + 7 -2x = 0 + 7 Combine like terms: 0 + 7 = 7 -2x = 7 Divide each side by '-2'. x = -3.5 Simplifying x = -3.5

Subproblem 2

Set the factor '(2 + -5x)' equal to zero and attempt to solve: Simplifying 2 + -5x = 0 Solving 2 + -5x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -5x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -5x = 0 + -2 -5x = 0 + -2 Combine like terms: 0 + -2 = -2 -5x = -2 Divide each side by '-5'. x = 0.4 Simplifying x = 0.4

Solution

x = {-3.5, 0.4}

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