Question

Вычислить 3)0.7^3+0.7×9.51 4)0.9^3-0.81×2,9

Answer 1

3)0.7^3+0.7×9.51=7
4)0.9^3-0.81×2.9=3.078

Answer 2

$3) 0.7 ^{3} +0.7*9.51=0.7*(0.7 ^{2} +9.51)=0.7*(0.49+9.51)=\\=0.7*10=7\\ \\ 4)0.9 ^{3} -0.81*2.9=0.9 ^{3} -0.9 ^{2} *2.9=0.9 ^{2} (0.9-2.9)=\\=0.81*(-2)=-0.81*2=-1.62$