Question

Mg giải giúp mình với ạ

Answer 1

1:

a: \(A=32,125-\left(6,325+12,125\right)-\left(37+13,675\right)\)

\(=32,125-6,325-12,125-37-13,675\)

\(=20-20-37=-37\)

b: \(B=4,75+\left(-\dfrac{1}{2}\right)^3+0,5^2-3\cdot\dfrac{-3}{8}\)

\(=4,75+0,25-\dfrac{1}{8}+\dfrac{9}{8}\)

=5+1

=6

Bài 2:

a: \(A=2^4\cdot5-\left[131-\left(13-4\right)^2\right]\)

\(=16\cdot5-\left[131-9^2\right]\)

=80-50

=30

b: \(B=2^3+3\cdot\left(\dfrac{1}{2}\right)^0-1+\left[\left(-2\right)^2:\dfrac{1}{2}\right]-8\)

\(=8-8+3-1+4\cdot2\)

=2+8

=10

Answer 2

Bài `2`

\(A=2^4\cdot5-\left[131-\left(13-4\right)^2\right]\\ =16\cdot5-\left(131-9^2\right)\\ =16\cdot5-\left(131-81\right)\\ =16\cdot5-50\\ =80-50=30\\ B=2^3+3\left(\dfrac{1}{2}\right)^0-1+\left[\left(-2\right)^2:\dfrac{1}{2}\right]-8\\ =8+3\cdot1-1+\left(4\cdot2\right)-8\\ =8+3-1+8-8\\ =10\)

Answer 3

\(B2\\ A=2^4.5-\left[131-\left(13-4\right)^2\right]\\ =16.5-\left[131-9^2\right]\\ =80-\left[131-81\right]\\ =80-50=30\\ ---\\ B=2^3+3.\left(\dfrac{1}{2}\right)^0-1+\left[\left(-2\right)^2:\dfrac{1}{2}\right]-8\\ =8+3.1-1+\left[4:\dfrac{1}{2}\right]-8\\ =8+3-1+8-8=10\)

Answer 4

\(B1\\ A=32,125-\left(6,325+12,125\right)-\left(37+13,675\right)\\ =\left(32,125-12,125\right)-\left(6,325+13,675\right)-37\\ =20-20-37\\ =0-37=-37\\ ---\\ B=4,75+\left(-\dfrac{1}{2}\right)^3+0,5^2-3.\dfrac{-3}{8}\\ =\dfrac{19}{4}+\left(-\dfrac{1}{8}\right)+\dfrac{1}{4}+\dfrac{9}{8}\\ =\left(\dfrac{19}{4}+\dfrac{1}{4}\right)+\left(\dfrac{9}{8}-\dfrac{1}{8}\right)\\ =5+1=6\)