Question

giúp mk nha

Answer 1

Bài 1.51:

a: =3¹

b: =5²

Answer 2

1.51:
a) 3³:3²
= 3^3-2
= 3¹ 
b) 5⁴:5²
= 5^4-2
= 5²
c) 8³.8²
= 8³⁺²
= 8⁵
d) 5⁴.5³:5²
= 5^4+3-2
= 5⁵
1.53:
a) 110-7²+22:2
= 110-49+22:2
= 61+11
= 72
b) 9.(8²-15)
= 9.(64-15)
= 9.49
= 441
c) 5.8-(17+8):5
= 40-25:5
= 40-5
= 35
d) 75:3+6.9²
= 25+6.81
= 25+486
= 511
Hết:<

Answer 3

\(1.51\)

\(a.3^3:3^2=3^1=3\\ b.5^4:5^2=5^2\\ c.8^3.8^2=8^5\\ d.5^4.5^3.5^2=5^9\\ \)

\(1.53\)

\(a.110-7^2+22:2\\ 110-49+11\\ =61+11\\ =72\)

\(b.9.\left(8^2-15\right)\\ =9.\left(64-15\right)\\ =9.49=448\)

\(c.5.8-\left(17+8\right):5\\ =40-25:5\\ =40-5\\ =35\)

\(d.75:3+6.9^2\\ =25+6.81\\ =25+486\\ =511\)