(2a+b)(a-2b)=

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Solution for (2a+b)(a-2b)= equation:


Simplifying
(2a + b)(a + -2b) = 0

Multiply (2a + b) * (a + -2b)
(2a * (a + -2b) + b(a + -2b)) = 0
((a * 2a + -2b * 2a) + b(a + -2b)) = 0

Reorder the terms:
((-4ab + 2a2) + b(a + -2b)) = 0
((-4ab + 2a2) + b(a + -2b)) = 0
(-4ab + 2a2 + (a * b + -2b * b)) = 0
(-4ab + 2a2 + (ab + -2b2)) = 0

Reorder the terms:
(-4ab + ab + 2a2 + -2b2) = 0

Combine like terms: -4ab + ab = -3ab
(-3ab + 2a2 + -2b2) = 0

Solving
-3ab + 2a2 + -2b2 = 0

Solving for variable 'a'.

Factor a trinomial.
(a + -2b)(2a + b) = 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 '(2a + b)' equal to zero and attempt to solve: Simplifying 2a + b = 0 Solving 2a + b = 0 Move all terms containing a to the left, all other terms to the right. Add '-1b' to each side of the equation. 2a + b + -1b = 0 + -1b Combine like terms: b + -1b = 0 2a + 0 = 0 + -1b 2a = 0 + -1b Remove the zero: 2a = -1b Divide each side by '2'. a = -0.5b Simplifying a = -0.5b

Solution

a = {2b, -0.5b}

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