SOLUTION: Multiply. Try to recognize the type of product before multiplying. (2x − 1)2 I need help please..

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Question 486584: Multiply. Try to recognize the type of product before multiplying.
(2x − 1)2

I need help please..

Found 2 solutions by MathLover1, deborabr:
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!
%282x-1%29%5E2
=%282x-1%29%282x-1%29
=4x%5E2-2x-2x%2B1
=4x%5E2-4x%2B1
the type of product is quadratic; square root of difference
Geometric figure:
parabola

Answer by deborabr(181) About Me  (Show Source):
You can put this solution on YOUR website!
(2x-1)2
this is remarkable product, in evidenced by factoring
look! the number 2 is multiplying 2x and -1
2x*2=4x
2*-1=-2 ---> ps.: - with - is + and - with + is - but don't confuse because
(-1)*2=2 -->here the - is multiplied too 'cause has parentheses
and -1*2=-2 --> here the - isn't multiplied 'cause doesn't have parentheses
so we get: 4x-2