SOLUTION: a) solve 3x^2-7x-5=0 b) find the x intercept of f(x)=3x^2-7x-5

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Question 261246: a) solve 3x^2-7x-5=0
b) find the x intercept of f(x)=3x^2-7x-5
Answer by drk(1908) About Me  (Show Source):
You can put this solution on YOUR website!
part a: 3x%5E2-7x-5=0
using the quadratic, we get
x+=+%287+%2B-+sqrt%28+49-4%2A3%2A%28-5%29+%29%29%2F%286%29+
simplifying, we get
x+=+%287+%2B-+sqrt%28+109+%29%29%2F%286%29+
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part b: x-intercept is
x+=+%287+%2B-+sqrt%28+109+%29%29%2F%286%29+
or x ~ -.573 ; x ~ 2.907