Lesson: Exponents and powers
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2
Step-by-step explanation:
(a) 3²-2³
9-8
1 ans
(b) 5/4⁸× 4/5⁶
5to 5 cancel
4to4 cancel
= 8×6
48 ans
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Answered by
2
Answer:
(a) 1
Step-by-step explanation:
(1/3 )^-2 - (1/2)^-3
converting negative powers into positive by reciprocal
therefore, 3 ^2 - 2^3
=9-8
= 1
(b) (4/5)^-8 ×(5/4)^-6
turning negative powers into positive
5 cut by 5 and 4 cut by 4
therefore, 8+6 =14
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