-21=g(g-10)

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Solution for -21=g(g-10) equation:


Simplifying
-21 = g(g + -10)

Reorder the terms:
-21 = g(-10 + g)
-21 = (-10 * g + g * g)
-21 = (-10g + g2)

Solving
-21 = -10g + g2

Solving for variable 'g'.

Reorder the terms:
-21 + 10g + -1g2 = -10g + 10g + g2 + -1g2

Combine like terms: -10g + 10g = 0
-21 + 10g + -1g2 = 0 + g2 + -1g2
-21 + 10g + -1g2 = g2 + -1g2

Combine like terms: g2 + -1g2 = 0
-21 + 10g + -1g2 = 0

Factor a trinomial.
(-7 + g)(3 + -1g) = 0

Subproblem 1

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

Subproblem 2

Set the factor '(3 + -1g)' equal to zero and attempt to solve: Simplifying 3 + -1g = 0 Solving 3 + -1g = 0 Move all terms containing g to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -1g = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1g = 0 + -3 -1g = 0 + -3 Combine like terms: 0 + -3 = -3 -1g = -3 Divide each side by '-1'. g = 3 Simplifying g = 3

Solution

g = {7, 3}

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