Question

37 5/5 22
15 4 12 2 + J7 J7+ป5
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Answer 1

Answer:

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

${(a - b)}^{2} = {a}^{2} - 2ab + {b}^{2}$