Question 87307
1. Fctor by grouping the first two terms and the last two terms.
So, (64x^3-48x^2)-(4x-3)
Factor out common factors..
This gives you 16x^2(4x-3)-(4x-3)
Factored form is (16x^2-1)(4x-3)

2.  Only common factors in second equation are xy.

This gives you xy(49x^2-112x^2y+64y^2)
You can factor this further by grouping in the second term.
xy(49x^2-56xy-56xy+64y^2)
   7x(7x-8y)-8y(7x-8y)
So, answer is xy(7x-8y)(7x-8y)or xy(7x-8y)^2


Good luck.