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^2-2x-63
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(x-9) + 7(x-9), notice you now have another common factor, the x-9
finally (x-9)[x+7]