Question

what is (x+y+42)²=?​

Answer 1

hey mate here is your answer.

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explanation =

$(x + y + 42) {}^{2} \\ (x {)}^{2} + (y {)}^{2} + (42 {)}^{2} + 2 \times x \times y + 2 \times y \times 42 + 2 \times 42 \times x \\ {x}^{2} + {y}^{2} + 1764 + 2xy + 84y + 84x$

Answer 2

Answer:

(x+y+z)²= X²+y²+ź²+2xy+2yz+2xz