Question

1000033
9.(15+x)(15+x)=?​

Answer 1

Answer:

$(15 + x)(15 + x) \\ \\ = {(15 + x)}^{2} \\ \\ = {(15)}^{2} + 2 \times 15 \times x + {x}^{2} \\ \\ = 225 + 30x + {x}^{2} \\ \\ formula \: used \\ \\ {(a + b)}^{2} \\ \\ = {a}^{2} + 2ab + {b}^{2}$

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