Q75 of 111 Page 337

Find the value of

(a) 25


(b) (-35)


(c) -(-4)4

(a) 25 = 2 × 2 × 2 × 2 × 2

= 4 × 4 × 2


= 16 × 2


= 32


(b) (-3)5 = (-3) × (-3) × (-3) × (-3) × (-3)


= 9 × 9 × (-3)


= 81 × -3


= -243


(c) - (-4)4 = - [(-4) × (-4) × (-4) × (-4)]


= - [16 × 16]


= - 256


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