Question 7(ii) Simplify: (ii) (−3)×(−2)3
(ii) (−3)×(−2)3
= (−3)×(−2)×(−2)×(−2)
= (−3)×(−8) ((−1)odd number=−1)
= 24
Question 6(ii) Simplify: (ii) 72×22
Simplify: 3−5×10−5×1255−7×6−5
Find the cube of:
(i) 7 (ii) 11 (iii) 16
(iv) 23 (v) 31 (vi) 42
(vii) 54