Question

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(2a + 3b)^2 + (a-2b)^2​

Answer 1

(2a+3b)^2+(a-2b)^2

=4a^2+9b^2+12ab+a^2+4b^2-4ab

=5a^2+13b^2+8ab

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Answer 2

2a^2+3b^2+2 (2a)(3b)+a^2+2b^2-(a)(2b)