Question

what number must be added to the polynomial to complete this square?
x^2-22x

Answer 1

im a bit slow:/

Answer 2

ok here we go.

Answer 3

half of -22 is...

Answer 4

slow

Answer 5

-11

Answer 6

and
\[(-11)^2\] is

Answer 7

121

Answer 8

you win!

Answer 9

oh, i didn't know that rule still applied to polynomials. thank you:)

Answer 10

? yes it does. btw when you add 121 you get
\[x^2-22x+121=(x-11)^2\]

Answer 11

Yeah, as long as x^2 term has coefficient of 1, this rule works
For Example, it won't work for
2x^2+4x

Answer 12

what if you would solve for x in a binomial equation?

Answer 13

What?

Answer 14

solving for x in a polynomial i meant

Answer 15

Say that you are trying to solve for x
x^2−22x+121=0
So you factor
(x-11)^2=0
that means x=11

Answer 16

so say
x^2-7x= - 24/4

run me through how to solve it step by step.. sorry for the trouble

Answer 17

please..

Answer 18

are you still trying to do this problem?