Resolve into factors
(2a-3b)^2-16b^2

Dear Student,

2a-3b2-16b2=4a2+9b2-12ab-16b2          a-b2=a2+b2-2ab=4a2-7b2-12ab=4a2-14ab+2ab-7b2=2a2a-7b+b2a-7b = (2a - 7b)(2a + b)

Regards

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