1/x-7 - 4/(x-7) to the 2nd power?

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1/x-7 - 4/(x-7) to the 2nd power?

2007-04-18 19:01:43 · 3 answers · asked by kyle e 1 in Science & Mathematics ➔ Mathematics

3 answers

x-7 - 4(x-7) / (x-7)^2

= x-7-4x-28 / (x-7)^2

= -5x - 35 / (x-7)^2

2007-04-18 19:06:52 · answer #1 · answered by Yssa A 3 · 0⤊ 1⤋

"Oh Mr. Sajack? I'd like to buy a VERB."

Do you mean this whole quantity raised to the 2nd power, or just the second term, or just the (x-7)? I'll assume you mean
( 1/(x-7) - 4/(x-7) ) ^2

In this case the denominators are the same inside, so simplify it to -3/(x-7). Then squaring this, you get 9 / (x-7)^2

2007-04-18 19:07:59 · answer #2 · answered by Anonymous · 0⤊ 1⤋

1/(x-7) - 4/(x-7)^2
= (x-7 -4)/(x-7)^2
=(x-11)/(x-7)^2

2007-04-18 19:12:25 · answer #3 · answered by ironduke8159 7 · 0⤊ 1⤋