Question

Which of the following is a solution of x2 - 7x = -5?

Answer 1

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

Answer 2

quadratic formula

Answer 3

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

Answer 4

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

Answer 5

yes now list your abc values

Answer 6

a=1
b=-7
c=5

Answer 7

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

Answer 8

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.

Answer 9

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

Answer 10

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

Answer 11

i got \[\frac{ 7\pm \sqrt{25} }{ 2}\]

Answer 12

ok now what?

Answer 13

that should have been 29

Answer 14

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

Answer 15

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

Answer 16

yep :)

Answer 17

thank you

Answer 18

no problem :)
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