huh? I already told you one thing to try. If they are equal, they must be equal for all values of x.
So, is it true if x=2?
Dennis says that (2x-7)^2=(7-2x)^2.Do you agree with Dennis?Explain
Answer please steve
4 answers
Oops. I guess you mistyped it before. I see it is different now.
So, you know that u^2 = (-u)^2, right?
so what if u = 2x-7 ?
So, you know that u^2 = (-u)^2, right?
so what if u = 2x-7 ?
That is x
huh? what does that mean? "That is x" ? ?
If u = 2x-7, then
(2x-7)^2 = (-(2x-7))^2 = (7-2x)^2
If u = 2x-7, then
(2x-7)^2 = (-(2x-7))^2 = (7-2x)^2
1 answer