A few days ago
How do we factorize this?
Hi, i would like to know how to factorize this.
9(x+1)^2-25(x-2)^2
Thanks
Top 2 Answers
A few days ago
Favorite Answer
Remember order of Operations (PEMDAS)
First do the parenthesis and exponents
(x+1)^2 and (x-2)^2
you get 9(x^2+2x+1) – 25(x^2-4x+4)
expand 9x^2+18x+9-25x^2+100x-100
combine -16x^2+108x-91
this cannot be factored any more
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A few days ago
Remember orders: powers first, then multiplication, then addition or subtraction. Break the problem down to that and should work it out fairly easily after that.
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