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

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


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

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

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

Multiply (2 + 7x) * (-7 + 2x)
(2(-7 + 2x) + 7x * (-7 + 2x)) = 0
((-7 * 2 + 2x * 2) + 7x * (-7 + 2x)) = 0
((-14 + 4x) + 7x * (-7 + 2x)) = 0
(-14 + 4x + (-7 * 7x + 2x * 7x)) = 0
(-14 + 4x + (-49x + 14x2)) = 0

Combine like terms: 4x + -49x = -45x
(-14 + -45x + 14x2) = 0

Solving
-14 + -45x + 14x2 = 0

Solving for variable 'x'.

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

Subproblem 1

Set the factor '(-2 + -7x)' equal to zero and attempt to solve: Simplifying -2 + -7x = 0 Solving -2 + -7x = 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 + -7x = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -7x = 0 + 2 -7x = 0 + 2 Combine like terms: 0 + 2 = 2 -7x = 2 Divide each side by '-7'. x = -0.2857142857 Simplifying x = -0.2857142857

Subproblem 2

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

Solution

x = {-0.2857142857, 3.5}

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