perform the indicated operations, then simplify
7x^2/ x^2-49 - 7x/x+7 + 7/x-7

7x^2-7x+7/ (x-7)(x+7)
56x+49/ (x+7)(x-7)
56/x
-42x+49/(x+7)(x-7)

perform the indicated operations then simplify 7x2 x249 7xx7 7x7 7x27x7 x7x7 56x49 x7x7 56x 42x49x7x7 class=