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i am being asked to find the left-most and right-most intercept of f(x) = x2 + 2x – 15

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asked Apr 6 in ALGEBRA 2 by anonymous
reshown Apr 7 by bradely

1 Answer

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Let x^2 + 2x -15  =  0

x^2 - 3x + 5x - 15  =  0

x(x - 3) + 5(x - 3)  =  0

(x - 3)(x + 5)  =  0

(x - 3)  =  0     ;      (x + 5)  =  0

x  =  3            ;      x  =  -5

Answer :

Hence Left Most Intercept is -5 and Right Most Intercept is 3.

answered Sep 7 by homeworkhelp Mentor

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