# Simplify this maths problem?

I tried it and got 81/y^3 (0.04y^8)

What have I done wrong?

### 9 Answers

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- JimLv 712 months ago
81/y^4 (0.04y^8) is ok as far as it goes, but it could go further

81/y^4 * y^8 / 25

81/25 y⁴

- llafferLv 712 months ago
First, keep fractions as fractions.

Then your y's can be combined from the first factor and the second factor.

You started correctly, but needed to finish things up.

- LônLv 712 months ago
Do each separately first....

(81/y^4) x (y^8/25) ......now multiply

81y^8 / 25y^4

(81y^4)/25

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