a^2+7ab-18b^2=

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Solution for a^2+7ab-18b^2= equation:


Simplifying
a2 + 7ab + -18b2 = 0

Reorder the terms:
7ab + a2 + -18b2 = 0

Solving
7ab + a2 + -18b2 = 0

Solving for variable 'a'.

Factor a trinomial.
(a + -2b)(a + 9b) = 0

Subproblem 1

Set the factor '(a + -2b)' equal to zero and attempt to solve: Simplifying a + -2b = 0 Solving a + -2b = 0 Move all terms containing a to the left, all other terms to the right. Add '2b' to each side of the equation. a + -2b + 2b = 0 + 2b Combine like terms: -2b + 2b = 0 a + 0 = 0 + 2b a = 0 + 2b Remove the zero: a = 2b Simplifying a = 2b

Subproblem 2

Set the factor '(a + 9b)' equal to zero and attempt to solve: Simplifying a + 9b = 0 Solving a + 9b = 0 Move all terms containing a to the left, all other terms to the right. Add '-9b' to each side of the equation. a + 9b + -9b = 0 + -9b Combine like terms: 9b + -9b = 0 a + 0 = 0 + -9b a = 0 + -9b Remove the zero: a = -9b Simplifying a = -9b

Solution

a = {2b, -9b}

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