Question 909252
I am having trouble with Factoring using algebra tile can you please help me. 
1. x^2-7x+12
Find a pair of factors, both negative, that add to 7.
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2. x^2+2x-8
Find a pair of factors of 8 that differ by 2.
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3. x^2-6x+8
Similar to #2
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4. x^2-3x-15
The the factors of 15
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Factoring is mostly trial and error.
There's nothing gained by having someone do it for you.