Question

evaluate:
(2a-b) (2a+b) ( 4a^2+b^2)
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Answer 1

Answer:

$(2a - b)(2a + b) = (4 {a}^{2} - {b}^{2} ) \\ = 4 {a}^{2} + 2ab - 2ab - {b}^{2} \\ = 4 {a}^{2} - {b}^{2}$