Question

Please Help WILL GIVE MEDALS!!!! use the quadratic formula to solve the equation -x^2+7x=8

Answer 1

\[x = \frac{ -b \pm \sqrt{b^{2} -4ac} }{ 2a }\]
\[ax^{2} + bx + c\]

Use this

Answer 2

can you explain more

Answer 3

-x^2 - a=-1
7x - b=7
-8 - c=-8

Answer 4

\[x=\frac{ -(7)\pm \sqrt{(7)^2-4(-1)(-8)} }{ 2(-1) }\]

Answer 5

do you understand how we got those numbers?

Answer 6

yes you plugged a,b, and c into the formula

Answer 7

\[x=\frac{ -7\pm \sqrt{49+32} }{ -2 }\]

Answer 8

so the answer is \[\frac{7\pm \sqrt{17}}{ 2}\]

Answer 9

no

Answer 10

i made a mistake above

Answer 11

but

Answer 12

how not

Answer 13

the 7 and the 2 would be negative

Answer 14

otherwise it's correct

Answer 15

ok thank you