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This question wants to be to factor the following.
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9a squared, b to the 4th, plus 15a squared, b squared, plus 4a squared, plus 4a squared.
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So i want to take out the greatest common factor.
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So i'm going to look at all of my numbers, and i'm going to take out what they all have in common.
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My greatest common factor.
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So 9, 15, and 4.
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So 9 and 15 haven't something in common, but 4 dozen.
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So i can't take out a number.
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Now we're going to move to the variables.
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This has two a's.
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This has two a's.
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This has two a's.
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So i can factor out of each of those a squared.
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So i'll be left with 9, 15, and 4.
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This would go away, this would go away, and this will go away, because it was factored out.
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Now i'm going to look at my b's.
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B to the fourth, b squared.
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And this one doesn't have a b.
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So i can't factor out a b, so it would be b to the fourth, b squared, and i move my a squared over, and this will be my final answer when i factor the greatest common factor out...