State number and type of roots Algebra 2

Algebra
Tutor: None Selected Time limit: 1 Day

Solve each equation. State number and type of roots.

1. -9x - 15 = 0

2. x^2 - x -2 =0

Thank you so much!

Feb 4th, 2015

-9x -15 = 0
-9x = 15
x = -5/3

1 negative real root


x^2 -x -2 =0
x^2 -2x+x -2 = 0
x(x-2)+1(x-2) =0
(x+1)(x-2) = 0
x = -1,2

1 negative and 1 positive root.

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Feb 4th, 2015

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