8a^2-18ab-5b^2=

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Solution for 8a^2-18ab-5b^2= equation:


Simplifying
8a2 + -18ab + -5b2 = 0

Reorder the terms:
-18ab + 8a2 + -5b2 = 0

Solving
-18ab + 8a2 + -5b2 = 0

Solving for variable 'a'.

Factor a trinomial.
(2a + -5b)(4a + b) = 0

Subproblem 1

Set the factor '(2a + -5b)' equal to zero and attempt to solve: Simplifying 2a + -5b = 0 Solving 2a + -5b = 0 Move all terms containing a to the left, all other terms to the right. Add '5b' to each side of the equation. 2a + -5b + 5b = 0 + 5b Combine like terms: -5b + 5b = 0 2a + 0 = 0 + 5b 2a = 0 + 5b Remove the zero: 2a = 5b Divide each side by '2'. a = 2.5b Simplifying a = 2.5b

Subproblem 2

Set the factor '(4a + b)' equal to zero and attempt to solve: Simplifying 4a + b = 0 Solving 4a + b = 0 Move all terms containing a to the left, all other terms to the right. Add '-1b' to each side of the equation. 4a + b + -1b = 0 + -1b Combine like terms: b + -1b = 0 4a + 0 = 0 + -1b 4a = 0 + -1b Remove the zero: 4a = -1b Divide each side by '4'. a = -0.25b Simplifying a = -0.25b

Solution

a = {2.5b, -0.25b}

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