Question

P = (x + 5)(x – 5) + 74– x ² Hallar : ( P )½

Answer 1

Respuesta:

P = (x + 5)(x - 5) + 74 - x ²

P = x ² -25 + 74 - x ²

P = x ² - x ² - 25 + 74

P = -25 + 74

P = 49

(P)½ = 24,5

Answer 2

Respuesta:

$\frac{49}{2}$

Explicación paso a paso:

$P=\left(x+5\right)\left(x-5\right)+74-x^2$

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• $\left(x+5\right)\left(x-5\right)$

$=x^2-5^2\\=x^2-25$

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$P=x^2-25+74-x^2\\P=x^2-x^2-25+74\\P=-25+74\\P=49$

Hallar : ( P )½

$\left(49\right)\frac{1}{2}=\frac{1\cdot \:49}{2}=\frac{49}{2}$