(40x-5x^2)-(5x+30)=0

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Solution for (40x-5x^2)-(5x+30)=0 equation:


Simplifying
(40x + -5x2) + -1(5x + 30) = 0

Remove parenthesis around (40x + -5x2)
40x + -5x2 + -1(5x + 30) = 0

Reorder the terms:
40x + -5x2 + -1(30 + 5x) = 0
40x + -5x2 + (30 * -1 + 5x * -1) = 0
40x + -5x2 + (-30 + -5x) = 0

Reorder the terms:
-30 + 40x + -5x + -5x2 = 0

Combine like terms: 40x + -5x = 35x
-30 + 35x + -5x2 = 0

Solving
-30 + 35x + -5x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '5'.
5(-6 + 7x + -1x2) = 0

Factor a trinomial.
5((-6 + x)(1 + -1x)) = 0

Ignore the factor 5.

Subproblem 1

Set the factor '(-6 + x)' equal to zero and attempt to solve: Simplifying -6 + x = 0 Solving -6 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + x = 0 + 6 Combine like terms: -6 + 6 = 0 0 + x = 0 + 6 x = 0 + 6 Combine like terms: 0 + 6 = 6 x = 6 Simplifying x = 6

Subproblem 2

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

Solution

x = {6, 1}

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