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factoring trinomials
By: Breanna A. Peters
directions-factor in to
binomials
• x^2+7x-18
x^2 xx xxx xx
-1 -1 -1 -1 -1 -1 -1 -1 -1-1 -1 -1 -1 -1 -1 -1 -1 -1
algibra tiles
x^2 xx xxx xx
-1 -1 -1 -1 -1 -1 -1 -1 -1-1 -1 -1 -1 -1 -1 -1 -1 -1-x
-x
xx
-x+x =0binomial(x+9)(x-2)
Check
x 9
x x^2 9x
-2 -2x -18
Answer
• x^2+7x-18
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