## anonymous one year ago Which of the following is a solution of x2 - 7x = -5?

1. pooja195

Do the directions specify what method to use? Quadratic Formula ? Factoring?

2. anonymous

3. pooja195

Ok can you put it into $\huge~\rm~ax^2+bx+c=0$ form?

4. anonymous

x^2 -7x+5=0 right?

5. pooja195

yes now list your abc values

6. anonymous

a=1 b=-7 c=5

7. pooja195

Good $\huge~\rm~~x=\frac{ -(-7)~\pm \sqrt{(-7)^2-4(1)(5)} }{ 2(1) }$ $\huge~\rm~~x=\frac{ 7)~\pm \sqrt{(-7)^2-4(1)(5)} }{ 2(1) }$ simplify

8. anonymous

a.7 plus or minus the square root of 69 divided by two b.7 plus or minus the square root of 29 divided by two. c.negative 7 plus or minus the square root of 29 divided by two d.negative 7 plus or minus the square root of 69 divided by two.

9. anonymous

these are the answers i have and my answer doesnt match any of them

10. pooja195

$\huge~\rm~(−7)^2−4(1)(5)$ solve this part only

11. anonymous

i got $\frac{ 7\pm \sqrt{25} }{ 2}$

12. anonymous

ok now what?

13. pooja195

that should have been 29

14. anonymous

oh i got it i had to redo it and do it all together this time. so it would be $\frac{ 7\pm \sqrt{29} }{ 2 }$

15. pooja195

$\huge~\rm~ \frac{ 7\pm \sqrt{29} }{ 2}$

16. pooja195

yep :)

17. anonymous

thank you

18. pooja195

no problem :) $$\huge\color{orange}{Welcome~To~OpenStudy}$$ Hey there!!! Since you are new here, read this legendary tutorial for new OpenStudiers!! http://goo.gl/5pp1u0 For an visual tutorial look at this! Its amazing :o https://prezi.com/fs3hqdpcopic/an-unofficial-guide-to-openstudy/ Also consider reading the CoC and the T&C http://openstudy.com/code-of-conduct http://openstudy.com/terms-and-conditions