Question

Si a☺ b  = a² - 2b, hallar(5☺2) ☺ ( 3 ☺ 4)

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Answer 1

Respuesta:

439

Explicación paso a paso:

a☺ b  = a² - 2b

(5☺2) ☺ (3☺4)

(5☺2) = 5² -2.2

(5☺2) = 25-4

(5☺2) = 21

Ahora...

(3☺4) = 3²-2.4

(3☺4) = 9 - 8

(3☺4) = 1

Entonces:

(5☺2) ☺ (3☺4)

(21☺1)

(21☺1) = 21² - 1.2

(21☺1) = 441 - 2

(21☺1) = 439

Answer 2

Respuesta:

$a = 5 \: \: b = 2 \\ {5}^{2} - 2(2) = 25 - 4 = 21 \\ a = 3 \: \: \: b = 4 \\ {3}^{2} - 2(4) = 9 - 8 = 1 \\ a = 21 \: \: b = 1 \\ {21}^{2} - 2(1) = 441 - 2 = 439$