Question 7(iii) Simplify: (iii) (−3)2×(−5)2
(iii) (−3)2×(−5)2
= (−3)×(−3)×(−5)×(−5)
= (9)×(25) ((−1)even number=1)
= 225
Question 6(iii) Simplify: (iii) 23×5
Question 180(vi)
Simplify : (3−2)2×(52)−3×(t−3)2(3−2)5×(53)(−2)×(t−4)3
Question 21
Which of the following is not true? (a)32>23 (b)43=26 (c)33=9 (d)25>52