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syhnaBest ResponseYou've already chosen the best response.0
use the quadratic formula
 one year ago

tmts98Best ResponseYou've already chosen the best response.0
I was looking over my notes for my midterm in Algebra II, and I think I copied down this wrong. It says if my original equation is x²+14x+40 my factored equation would be 1(x+10)(x+4), I foiled this out because it looked wrong and I got positive x²+14+40. What do I have wrong?
 one year ago

tmts98Best ResponseYou've already chosen the best response.0
*this down by the way...
 one year ago

syhnaBest ResponseYou've already chosen the best response.0
(x^2  14  40) now factor x^2  14  40 using either the quadratic formula of completing the square
 one year ago

tmts98Best ResponseYou've already chosen the best response.0
Well, I used the quadratic formula and I got: \[x=7\pm3\sqrt{2}\] Is this right?
 one year ago

funinaboxBest ResponseYou've already chosen the best response.0
to check if your answer is correct, plug the number(s) back into your original expression. if the answer you get is 0, then you have found the correct roots
 one year ago

funinaboxBest ResponseYou've already chosen the best response.0
because the whole point of factoring is to find what x values make f(x) = 0
 one year ago

tmts98Best ResponseYou've already chosen the best response.0
Well, now I am just more confused then when I started,.
 one year ago
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