Question

expand(2x+3y-42)^2=?​

Answer 1

Answer:

here's your answer friend

(a+b+c)^2 = $a^{2} + b^{2} + c^{2} +2ab +2bc +2ca$

$4x^{2} + 9y^{2} + 1764 +12xy - 252y - 168x$

hope it helps

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