Question

a=5⁰ -2‐² b=(1-½) ‐¹ c=12⁰ -3 qual o resultado de (b -a) c

PRECISO URGENTE ME AJUDEM​

Answer 1

Resposta:

$(b - a)c = -\frac{5}{2}$

Explicação passo-a-passo:

$a = 5^{0} - 2^{-2}\\b = (1 - \frac{1}{2})^{-1}\\c = 12^{0} - 3$

Vamos resolver $a, b, c$ separadamente:

$a = 5^{0} - 2^{-2} = 1 - \frac{1}{2^{2}} = 1 - \frac{1}{4} = \frac{3}{4}\\\\b = (1 - \frac{1}{2})^{-1} = (\frac{1}{2})^{-1} = 2\\\\c = 12^{0} - 3 = 1 - 3 = -2$

Agora, vamos resolver $(b - a)c$:

$(b - a)c = \\\\(2 - \frac{3}{4})(-2) = \\\\\frac{5}{4}(-2) = \\\\-\frac{10}{4} = \\\\-\frac{5}{2}$