algebra
posted by sara .
multiply and solve please i need help bad
x^21/x3 * 4x12/x^2x2

You can factor out some terms.
(x^21)/(x3) * (4x12)
= [(x+1)(x1)/(x3)]*4(x3)
= 4(x+1)(x1)
The divisor (x^2 x 2) can be rewritten
(x2)(x+1), so the (x+1) terms can also be cancelled out. That leaves you with
4(x1)/(x2)