SOLUTION: I can not figure this problem out, what am I not doing right? Rewrite the middle term as the sum of two terms and then factor by grouping. x2 – 2x – 63

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Notice taht 63 can be written as 9*7, and also notice that -9 +7 = -2. Isn't that an interesting coincidence for this problem!!

So, let's write this and do factoring by grouping. Group the first two and take out a common factor of x, and take out a common factor of 7 from the last two terms.


Now, there is common factor of x-9, so take out this common factor:


R^2 at SCC