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View Full Version : X2 - 9x + 14 factor fully


preetbahia
Jan 6, 2011, 08:22 PM

jcaron2
Jan 6, 2011, 09:34 PM
Can't you think of two numbers who multiply together to give you 14 and who add together to give you -9?

For example, -3 and -4 multiply together to give you 12, and they add together to give you -7. Obviously those aren't the right ones, but if they were, the answer would be (x-3)(x-4).