Question

evaluate using suitable identity: (3x+4y) ²
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Answer 1

Answer:

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Answer 2

Answer:

(a+b)^2 identity used

thus

(3x+4y)^2 = (3x)^2+(4y)^2+2×(3x)×(4y)

=9x^2+16y^2+24xy

here is the answer

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