Book
Maths Puzzle
Algebra
Factor completely the following polynomials:
1) (a-b)^2 - 4(c-d)^2
2) 6(x-y)^2 + 23(x-y) - 4
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i dont knoww how to do this 3/4multiplyed (8x+negitive20}=1/2times(neg.16x+neg.4)+1 can u help me please!