8. Simplify and write in exponential forms.
(a) (-16)5 x (-16); (b) (18)4 x (18)7
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Step-by-step explanation:
-16² × 5 = ( -2⁴)² × 5 = (-2⁸) × 5
18² × 4 × 7 = 9² × 2² × 2² × 7 = 3⁴ × 2⁴ ×7
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