a) $25^{2}$ : $5^{3}$
d) 3-(-$\frac{6}{7}$)$^{0}$ + ($\frac{1}{2}$)$^{2}$ : 2
a) $25^{2}$ : $5^{3}$ d) 3-(-$\frac{6}{7}$)$^{0}$ + ($\frac{1}{2}$)$^{2}$ : 2
By Alexandra
By Alexandra
a) $25^{2}$ : $5^{3}$
d) 3-(-$\frac{6}{7}$)$^{0}$ + ($\frac{1}{2}$)$^{2}$ : 2
a, 25^2 : 5^3
=( 5^2)^2 :5^3
=5^4:5^3
=5
b, 3-(-6/7)^0+(1/2)^2 :2
=3- 1 +1/4 :2
=2+ 1/8=17/8
Đáp án: a ) 5
b ) $\frac{17}{8}$
Giải thích các bước giải:
a ) $25^{2}$ : $5^{3}$
= $5^{4}$ : $5^{3}$
= 5
d ) 3 – $(-\frac{6}{7})^{0}$ + ($\frac{1}{2})^{2}$ : 2
= 3 – 1 + $\frac{1}{4}$ : 2
= 2 + $\frac{1}{8}$
= $\frac{17}{8}$