Question

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Answer 1

Respuesta:

Explicación paso a paso:

$(a+b)^{2}$ = $a^{2}$  +2ab + $b^{2}$

$5^{2}$ = $a^{2}$  +2(1) + $b^{2}$

25 - 2 = $a^{2}$  + $b^{2}$

23 = $a^{2}$ + $b^{2}$