## Tresag Group Title use the quadratic formula to find any x-intercepts on the graph of the equation. y=x^2+2x-10 one year ago one year ago

1. sasogeek Group Title

2. Tresag Group Title

I don't know

3. Tresag Group Title

ax^2+bx+c=0 ?

4. sasogeek Group Title

nope :P well the quadratic formula states that $$\huge x=\frac{-b \pm \sqrt{b^2-4ac}}{2a}$$

5. sasogeek Group Title

can you continue now that you have the formula?

6. Tresag Group Title

no

7. sasogeek Group Title

ok so if you have $$\huge ax^2+bx+c=0$$ substitute the values of a b and c into the formula and solve it.

8. sasogeek Group Title

are we okay now?

9. Yahoo! Group Title

To find x-intercepts put y =0 in y=x^2+2x-10

10. Tresag Group Title

no

11. Yahoo! Group Title

12. Tresag Group Title

ok how do I do that ?

13. sasogeek Group Title

you have an equation similar to ax^2+bx+c=0 substitute the values into the quadratic formula i gave you, and solve it algebraically

14. Tresag Group Title

I don not know how to do that ???????

15. sasogeek Group Title

a=1 b=2 c=-10 replace that into the equation that into the formula

16. sasogeek Group Title

how are we doing?

17. Tresag Group Title

x^2+2x+-10=0

18. sasogeek Group Title

19. Tresag Group Title

so now what do I do w/ it ?

20. sasogeek Group Title

i told you what a,b, and c are in that equation. a=1 b=2 c=-10 replace the values of a,b and c into the quadratic formula i gave you and solve it to find x

21. sasogeek Group Title

which part of that don't you understand? :/