math,help
posted by jas20 .
Can someone show me how step by step how to solve this problem...
Rewrite the middle term as the sum of two terms and then factor by grouping.
x^22x63
step 1. Find two factors which when multiplied will give you 63 and when added will give you 2
how about 9 and +7??
step 2:
rewrite 2x as 9x + 7x
then x^2  9x + 7x  63
find the common factors of the first two terms and the last two terms
x(x9) + 7(x9), notice you now have another common factor, the x9
finally (x9)[x+7]
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