Giải Bài 3 trang 82

Đề bài

Tính:

a) ${10}^{10}.\left(-{10}^4\right)$;

b) $\left(-2\right).\left(-2\right).\left(-2\right).\left(-2\right).\left(-2\right)+2^5$;

c) $\left(-3\right).\left(-3\right).\left(-3\right).\left(-3\right)-3^4$

Lời giải chi tiết

a) ${10}^{10}.\left(-{10}^4\right)=-\left({10}^{10}{.10}^4\right)=-\left({10}^{10+4}\right)=-{10}^{14}$

b)

$\begin{array}{c}\left(-2\right).\left(-2\right).\left(-2\right).\left(-2\right).\left(-2\right)+2^5\\ =(-2{)}^5+2^5\\ =-2^5+2^5=0\end{array}$

c)

$\begin{array}{c}\left(-3\right).\left(-3\right).\left(-3\right).\left(-3\right)-3^4\\ =(-3{)}^4-3^4=3^4-3^4=0\end{array}$

trithuchub.com