por Eric Schmidt hace 12 años
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Factor by Grouping
Is the leading coefficient =1?
Factor ax^2+bx+c as the product of 2 binomials
Split the Middle Term
Guess and Check
x^2+bx+c=(x+m)(x+n), such that m+n=b and m*n=c
Difference of Squares [a^2-b^2=(a+b)(a-b)]