Question

For which value of x does the graph of y=3x^2-2x-5 cross the x-axis?
A: -1
B: -5/3
C: -2
D: -3/5

Answer 1

Hint: it crosses the x axis when y = 0

Answer 2

0=3x^2-2x-5

Answer 3

I'm sorry but I still don't know the answer

Answer 4

What are you having trouble with?

Answer 5

\[x=2\pm \sqrt{4+60}/6=2\pm8/6=1\pm4/3\]
so x= 5/3 and x=-1

Answer 6

Ok thank you, I had that but I wasn't sure .

Answer 7

yw