What are the x-intercepts of the equation f(x)=3x^2+10x-8 ?

1 Answer
Oct 26, 2017

x = 2/3 and x =-4 are the x-intercepts

Explanation:

The xintercepts are the points where the parabola crosses the x-axis.

All along the x-axis, y=0. This gives us the equation:

3x^2+10x-8=0" "larr factorise and solve for x

(3x-2)(x+4)=0

Set each factor equal to 0

3x-2=0" "rarr 3x=2" "rarr x= 2/3

x+4=0" "rarr x= -4