(x+5)(75-x)=

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Solution for (x+5)(75-x)= equation:


Simplifying
(x + 5)(75 + -1x) = 0

Reorder the terms:
(5 + x)(75 + -1x) = 0

Multiply (5 + x) * (75 + -1x)
(5(75 + -1x) + x(75 + -1x)) = 0
((75 * 5 + -1x * 5) + x(75 + -1x)) = 0
((375 + -5x) + x(75 + -1x)) = 0
(375 + -5x + (75 * x + -1x * x)) = 0
(375 + -5x + (75x + -1x2)) = 0

Combine like terms: -5x + 75x = 70x
(375 + 70x + -1x2) = 0

Solving
375 + 70x + -1x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(75 + -1x)(5 + x) = 0

Subproblem 1

Set the factor '(75 + -1x)' equal to zero and attempt to solve: Simplifying 75 + -1x = 0 Solving 75 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-75' to each side of the equation. 75 + -75 + -1x = 0 + -75 Combine like terms: 75 + -75 = 0 0 + -1x = 0 + -75 -1x = 0 + -75 Combine like terms: 0 + -75 = -75 -1x = -75 Divide each side by '-1'. x = 75 Simplifying x = 75

Subproblem 2

Set the factor '(5 + x)' equal to zero and attempt to solve: Simplifying 5 + x = 0 Solving 5 + x = 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 + x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + x = 0 + -5 x = 0 + -5 Combine like terms: 0 + -5 = -5 x = -5 Simplifying x = -5

Solution

x = {75, -5}

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