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Mathematics for IGCSE & O level - Indices 1 (Section 2 - No. 20)
Simplify: y
-2
* y
5
y
3
y
-10
y
-7
1/y
3
Explanation
When multiplying exponents with the same base, add the powers. y
-2
* y
5
= y
-2+5
= y
3
.
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