Homework Help: algebra 2

Posted by lisa on Friday, December 7, 2012 at 7:42pm.

find the number of zeros(x-intercept) y=a^2+a-56 show the step please.

algebra 2 - Mac, Friday, December 7, 2012 at 7:47pm
Factor
What factors multiply to equal 56 and subtract to
equal 1?
algebra 2 - lisa, Friday, December 7, 2012 at 7:50pm
-7.8
algebra 2 - Mac, Friday, December 7, 2012 at 7:54pm
Yes
(X-7)(x+8)
Check by foiling
X^2 +8x -7x -56
X^2 +x -56

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