Question

Calcule o valor das expressões numericas: A) (–9)² e (+5)×(+16) B) (–2)⁴ e (+16)×(–1) C)(–6)² e (–7)²+13° Por favor me ajudem

Answer 1

Resposta:

A) (–9)²= +81 e (+5)×(+16) = +80

B) (–2)⁴= +16 e (+16)×(–1) = -16

C) (–6)²= +36 e (–7)²+13°= +50

Explicação passo a passo:

a) (–9)² e (+5)×(+16)

(–9)²= +81, (positivo pois - . - = +)

(+5)×(+16) = +80

b) (–2)⁴ e (+16)×(–1)

(–2)⁴= +16

(+16)×(–1) = -16

c)(–6)² e (–7)²+13°

(–6)²= +36  

(–7)²+13°= +49 + 1 = +50                              (13°=1)