Question

1, 12:(\(\dfrac{3}{4}\)-\(\dfrac{5}{6}\))^{2
2,\(\dfrac{7}{23}\).[(-\(\dfrac{8}{6}\))-\(\dfrac{45}{18}\)]}

Answer 1

mik cần gấp nên bn nào giúp mik với ạk

Answer 2

1, \(12:\left(\dfrac{3}{4}-\dfrac{5}{6}\right)^2=12:\left(-\dfrac{1}{12}\right)^2=12:\dfrac{1}{144}=1728\)

2, \(\dfrac{7}{23}.\left(-\dfrac{8}{6}-\dfrac{45}{18}\right)=\dfrac{7}{23}.-\dfrac{23}{6}=-\dfrac{7}{6}\)

Answer 3

1) 12 : (3/4 - 5/6)²

= 12 : (-1/12)²

= 12 : 1/144

=1728

2) 7/23 . (-8/6 - 45/18)

= 7/23 . (-23/6)

= -7/6

Chúc bạn học tốt!! ^^

Answer 4

1: \(12:\left(\dfrac{3}{4}-\dfrac{5}{6}\right)^2=1728\)

2: \(\dfrac{7}{23}\cdot\left[\left(-\dfrac{8}{6}\right)-\dfrac{45}{18}\right]=-\dfrac{7}{6}\)