Question

Which of the following is not equivalent to the rational expression when x not equal to 7 ?
x^2-49/x-7
A. x-7
B. x+7/x-7
C. 1/x+7
D. x+7

Answer 1

HI!!

Answer 2

a rather strangely worded question, which you can interpret as "factor and cancel"
does that help?

Answer 3

not really because I suck at math honestly and hi haha

Answer 4

lol ok lets do it then
factor the top, which is \(x^2-49\) the "difference of two squares"
\[a^2-b^2=(a+b)(a-b)\] always, so
\[x^2-49=(x+7)(x-7)\]

Answer 5

which of the following is equal to the rational expression when x not equal to 7............ I TYPED THE QUESTION WRONG!!!

Answer 6

i knew that since 3 of them are NOT and only one of them IS

Answer 7

yes... sorry

Answer 8

since the numerator is \((x+7)(x-7)\) the entire fraction is
\[\frac{(x+7)(x-7)}{x-7}\] now cancel

Answer 9

x+7?

Answer 10

you know what i mean by that?

Answer 11

yeah you get \(x+7\)

Answer 12

thank you

Answer 13

\[\color\magenta\heartsuit\]

Answer 14

:)