Answer:
the answer is b^2 i don't know the answer either
Explanation:
9x^4 - 25/9x^6.
3x^2 * 3x^2 = 9x^4 and
5/3x^3 * 5/3x^3 = 25/9x^6
The answer is 9x^4 - 25/9x^6.
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