80=-5(x-4.5)2+101.25

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Solution for 80=-5(x-4.5)2+101.25 equation:


Simplifying
80 = -5(x + -4.5) * 2 + 101.25

Reorder the terms:
80 = -5(-4.5 + x) * 2 + 101.25

Reorder the terms for easier multiplication:
80 = -5 * 2(-4.5 + x) + 101.25

Multiply -5 * 2
80 = -10(-4.5 + x) + 101.25
80 = (-4.5 * -10 + x * -10) + 101.25
80 = (45 + -10x) + 101.25

Reorder the terms:
80 = 45 + 101.25 + -10x

Combine like terms: 45 + 101.25 = 146.25
80 = 146.25 + -10x

Solving
80 = 146.25 + -10x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '10x' to each side of the equation.
80 + 10x = 146.25 + -10x + 10x

Combine like terms: -10x + 10x = 0
80 + 10x = 146.25 + 0
80 + 10x = 146.25

Add '-80' to each side of the equation.
80 + -80 + 10x = 146.25 + -80

Combine like terms: 80 + -80 = 0
0 + 10x = 146.25 + -80
10x = 146.25 + -80

Combine like terms: 146.25 + -80 = 66.25
10x = 66.25

Divide each side by '10'.
x = 6.625

Simplifying
x = 6.625

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