Question

Calculeaza:
a) 7³+7¹+7⁰+0⁷+1⁷
b) 1/2+1/6+1/12+1/20​

Answer 1

Răspuns:

Explicație pas cu pas:

a) 7³+7¹+7⁰+0⁷+1⁷ = 343+7+1+0+1 = 352

b) ³⁰⁾1/2+¹⁰⁾1/6+⁵⁾1/12+³⁾1/20 = (30+10+5+3)/60 = 48/60⁽⁶ = 8/10⁽² = 4/5