math
posted by Jetta on .
Multiplying and Dividing Rational Expressions:
2) x^28x+7/x^2+6x7 = (x7)/(x+7)
3) x^25x+6/x+4 times 3x+12/x2 =3(x3)
4)2x3/5x+1 divided by 6x^213x+6/15x^27x2=1
5) x^39x/x^2+11x+24 times x^2+7x8/x^24x+3= x(x3)(x1)/(x+3)(x+8)
6) 4x8/x^2x6 divided by x^3 +x^26x/x^29=(x3)/x(x2)
7) x^216/x3 divided x+4/x^29=(x1)/(x+1)

2. (X^2  8X + 7) / (X^2 + 6X  7) =
(X  1) (X  7) / (X + 7) (X  1) =
Cancel the (x  1) factors:
(X  7) / (X + 7).
3. ((X^2  5X + 6) / (X + 4)) *
(3X + 12) / (X  2) =
((X  3) * (X  2) / (X + 4)) *
3*(X+4) / (X  2) =
Cancel (x + 4) and (x  2) factors:
3(X  3).