(7x-3)(5x+4)=

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Solution for (7x-3)(5x+4)= equation:


Simplifying
(7x + -3)(5x + 4) = 0

Reorder the terms:
(-3 + 7x)(5x + 4) = 0

Reorder the terms:
(-3 + 7x)(4 + 5x) = 0

Multiply (-3 + 7x) * (4 + 5x)
(-3(4 + 5x) + 7x * (4 + 5x)) = 0
((4 * -3 + 5x * -3) + 7x * (4 + 5x)) = 0
((-12 + -15x) + 7x * (4 + 5x)) = 0
(-12 + -15x + (4 * 7x + 5x * 7x)) = 0
(-12 + -15x + (28x + 35x2)) = 0

Combine like terms: -15x + 28x = 13x
(-12 + 13x + 35x2) = 0

Solving
-12 + 13x + 35x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-4 + -5x)(3 + -7x) = 0

Subproblem 1

Set the factor '(-4 + -5x)' equal to zero and attempt to solve: Simplifying -4 + -5x = 0 Solving -4 + -5x = 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 + -5x = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -5x = 0 + 4 -5x = 0 + 4 Combine like terms: 0 + 4 = 4 -5x = 4 Divide each side by '-5'. x = -0.8 Simplifying x = -0.8

Subproblem 2

Set the factor '(3 + -7x)' equal to zero and attempt to solve: Simplifying 3 + -7x = 0 Solving 3 + -7x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -7x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -7x = 0 + -3 -7x = 0 + -3 Combine like terms: 0 + -3 = -3 -7x = -3 Divide each side by '-7'. x = 0.4285714286 Simplifying x = 0.4285714286

Solution

x = {-0.8, 0.4285714286}

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