Question

Вычислите 2,7(1,7^3-1,5^3)/5,1^2+5,1*4,5+4,5^2

Answer 1

$\frac{2,7(1,7^3-1,5^3)}{5,1^2+5,1*4,5+4,5^2} = \frac{2,7(1,7-1,5)(1,7^2+1,7*1,5+1,5^2)}{9*1,7^2+3*1,7*3*1,5+9*1,5^2} =$

$=\frac{2,7*0,2(1,7^2+1,7*1,5+1,5^2)}{9(1,7^2+1,7*1,5+1,5^2)} =0,3*0,2=0,06$