An adventurer learns how to factor when a ghost teaches him!
I need to get past this bridge to find the treasure!
Wait! Adventurer, first, you need to solve this factoring problem: 64x^2-9
Uhh... and how do you expect me to do that?
Well, isn't it obvious? First, you have to find out if there is a difference of perfect squares, A.K.A. if the problem is a perfect square minus a perfect square. Next, you put the square root of each number in parenthesis, and have one set of numbers be addition, and the other be subtraction. PS, 64 and x^2 are both squares.
So, the square root 64x² is 8x, and the square root of 9 is 3, so would the answer be, umm... (8x+3)(8x-3)? Right?
Yes, exactly. But since I taught you how to do it, you don't pass.
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