(7w-5)(8w+7)=

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Solution for (7w-5)(8w+7)= equation:


Simplifying
(7w + -5)(8w + 7) = 0

Reorder the terms:
(-5 + 7w)(8w + 7) = 0

Reorder the terms:
(-5 + 7w)(7 + 8w) = 0

Multiply (-5 + 7w) * (7 + 8w)
(-5(7 + 8w) + 7w * (7 + 8w)) = 0
((7 * -5 + 8w * -5) + 7w * (7 + 8w)) = 0
((-35 + -40w) + 7w * (7 + 8w)) = 0
(-35 + -40w + (7 * 7w + 8w * 7w)) = 0
(-35 + -40w + (49w + 56w2)) = 0

Combine like terms: -40w + 49w = 9w
(-35 + 9w + 56w2) = 0

Solving
-35 + 9w + 56w2 = 0

Solving for variable 'w'.

Factor a trinomial.
(-7 + -8w)(5 + -7w) = 0

Subproblem 1

Set the factor '(-7 + -8w)' equal to zero and attempt to solve: Simplifying -7 + -8w = 0 Solving -7 + -8w = 0 Move all terms containing w to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + -8w = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -8w = 0 + 7 -8w = 0 + 7 Combine like terms: 0 + 7 = 7 -8w = 7 Divide each side by '-8'. w = -0.875 Simplifying w = -0.875

Subproblem 2

Set the factor '(5 + -7w)' equal to zero and attempt to solve: Simplifying 5 + -7w = 0 Solving 5 + -7w = 0 Move all terms containing w to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -7w = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -7w = 0 + -5 -7w = 0 + -5 Combine like terms: 0 + -5 = -5 -7w = -5 Divide each side by '-7'. w = 0.7142857143 Simplifying w = 0.7142857143

Solution

w = {-0.875, 0.7142857143}

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