2007-08-25 08:55:17 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Use parentheses to make things clearer.
(x+4) / (3x^2 -7x) = (1/x + 4/x^2) / (3 -7/x)
To show that these are equal multiply the left side by
(1/x^2) / (1/x)^2
(x+4) / (3x^2 -7x)
= [(x+4)(1/x^2)] / [(3x^2 -7x)(1/x^2)]
You're basically just dividing each term by x^2.
= (x/x^2 + 4/x^2) / (3x^2/x^2 -7x/x^2)
= (1/x +4/x^2) / (3 -7/x)
2007-08-29 08:34:21 · answer #1 · answered by MsMath 7 · 1⤊ 1⤋
The gist of the communicate available (sorry, there are too many pages to furnish each and every of the links) is that wands help to concentration the magic resident in the witch or wizard, yet wandless magic remains conceivable, rather for extremely gifted human beings like Snape and Dumbledore. some examples ... Apparition Assuming one's Animagus style (or Metamorphpagus) Accio (the Summoning appeal) Elves can do magic without employing wands Lumos
2017-01-05 05:52:37 · answer #2 · answered by ? 3 · 0⤊ 0⤋
Only if x = 1.
2007-09-01 02:33:15 · answer #3 · answered by sdc_99 5 · 0⤊ 1⤋
the question is solve for x...not show that
Heres the start, the rest is easy
multiply both sides by 3x^2
you now have a simple linear equation..solve for x
2007-08-25 09:03:45 · answer #4 · answered by Mike M 4 · 0⤊ 1⤋