factorise the following 9a²b²-15ab²
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9a²b²-15ab²
Finding the common term
9a²b² = 3×3×a×a×b×b
15ab² = 3×5×a×b×b
So the common term is 3ab
9a²b²-15ab² = 3ab( 3ab - 5b)
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Answer:
9a²b²-15ab²
3ab²(3a-5) common in both is 3ab²
3ab²*(3a-5)
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