Question

Qual o valor de a+b sabendo que
a = 2⁰ - 4⁻¹
b= 2⁰ - 2⁻¹

Answer 1

Resposta: $\frac{5}{4}$

calculo:

a=2⁰ - 4⁻¹

a = 1 - $\frac{1}{4}$

a = $\frac{4}{4}$ - $\frac{1}{4}$

a = $\frac{3}{4}$

~~~~

b = 2⁰ - 2⁻¹

b = 1 - $\frac{1}{2}$

b = $\frac{2}{2}$ - $\frac{1}{2}$

b = $\frac{1}{2}$

~~~~

a+b

$\frac{3}{4}$ + $\frac{1}{2}$

$\frac{3}{4}$ + $\frac{2}{4}$

$\frac{5}{4}$