4.5 x 4.5 - 2(4.5)(1.5) +1.5x1.5 ______________________________
4.5 x 4.5+2(4.5)(1.5)+1.5x1.5 solve it using identity
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Answer:(a-b)square/(a+b)square
(4.5-1.5)square/(4.5+1.5) square
3square/6square
=9/36
3/12=1/4
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