## kiara23 3 years ago Solve. 14x2 + 42x + 70 = 0

1. moneybird

factor out the 7 first

2. mark_o.

divide them with 14

3. mark_o.

14x^2/14 + 42x/14 + 70/14 = 0/14

4. mark_o.

x^2 + 3x + 5 = 0 then try solving for x

5. mark_o.

use quadratic formula $x=[-b-+\sqrt{(b^2 -4ac)}/2a$, here you a=1,b=3,c=5 try them

6. mark_o.

youl get an answer of x=-1.5+1.66i and x=-1.5-1.66i ans...

7. mark_o.

remember that $\sqrt{-1}=i$

8. mark_o.

let me know if you hve question

9. kiara23

im def. lost math is not my strongest subject. i just cant get it

10. mark_o.

it just takes practise.....

11. mark_o.

do this one til you get the answer

12. mark_o.

you already know how to use the quadraic formula right?

13. kiara23

a little but not really

14. mark_o.

ok try that till u get the answer