Ta có: \(-12:\left(\frac{3}{4}-\frac{5}{6}\right)^2\)
\(=-12:\left(\frac{18}{24}-\frac{20}{24}\right)^2\)
\(=-12:\left(-\frac{1}{12}\right)^2\)
\(=-12:\frac{1}{144}\)
\(=-12\cdot144=-1728\)
Ta có: −12:(34−56)2−12:(34−56)2
=−12:(1824−2024)2=−12:(1824−2024)2
=−12:(−112)2=−12:(−112)2
=−12:1144=−12:1144
=−12⋅144=−172
-12:(3/4-5/6)^2
=-12:(9/12-10/12)^2
=-12÷(-1/12)^2
=-12÷1/144
=-12×144=-1728
Ta có: -12:\left(\frac{3}{4}-\frac{5}{6}\right)^2−12:(43−65)2
=-12:\left(\frac{18}{24}-\frac{20}{24}\right)^2=−12:(2418−2420)2
=-12:\left(-\frac{1}{12}\right)^2=−12:(−121)2
=-12:\frac{1}{144}=−12:1441
=-12\cdot144=-1728=−12⋅144=−1728
\(-12:\left(\dfrac{3}{4}-\dfrac{5}{6}\right)^2=-12:\left(\dfrac{-1}{12}\right)^2=-12:\dfrac{1}{144}=-1728\)
