WyzAnt.comMy second question is factoring also. The problem is k^2 - k - 30/ k - 1
How do I factor this polynomial k^2 + k - 42 / 1 - k
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1 Answer
(k+a)(k+b) = k2 + ak + bk + ab = k2 + (a+b)k + ab
↓ ↓
. 1 -42
7 – 6 = 1 and 7 * (-6) = -42
k2 + k - 42 = (k - 6)(k + 7)
2. ↓ ↓
-1 -30
-6*5 = -30 and -6 + 5 = -1
k2 - k - 30 = (k - 6)(k + 5)
Comments
Hi Crystal. Can you, please, write this problem exactly as it appears in the original source. Thank you.
- Nataliya D. 2/22/2013