a) (-2)^3.(-3)^3.5^3=[(-2)(-3)5]^3=30^3
b)3^3.(-2)^3.(-7).(-7)^2=3^3.(-2)^3.(-7)^3=[3.(-2).(-7)]^3=42^3
tích đúng V
a) \(\left(-8\right)\cdot\left(-3\right)^3\cdot125\)
=\(\left(-2\right)^3\cdot\left(-3\right)^3\cdot5^3\)
=\(\left(-2\cdot-3\cdot5\right)^3\)
=\(30^3\)
b) \(27\cdot\left(-2\right)^3\cdot\left(-7\right)\cdot49\)
=\(3^3\cdot\left(-2\right)^3\cdot\left(-7\right)\cdot7^2\)
=\(3^3\cdot\left(-2\right)^3\cdot\left(-7\right)^3\)
\(=\left(3\cdot-2\cdot-7\right)^3=42^3\)
a) (-8) . (-3)3 . (+125)
= (-2)3 . (-3)3 . 53
= [(-2) . (-3) . 5]3
= 303
b) 27 . (-2)3 . (-7) . (+49)
= 33 . (-2)3 . (-7) . 72
= 33 . (-2)3 . (-7)3
= [3 . (-2) . (-7)]3
= 423
a) (-8).(-3)3.(+125)=(-2)3.(-3)3.53
=[(-2).(-3).5]3
=303
b)27.(-2)3.(-7).(+49)=33.(-2)3.(-7).72
=33.(-2)3.[(-7).72]
=33.(-2)3.(-7)3
=423