Question

simplify (3x-y)(x+6y)

Answer 1

3x(x+6y)-y(x+6y)
(3x)(x)+(3x)(6y)-(y)(x)-(y)(6y)
3x^2+18xy-xy-6y^2
3x^2+17xy-6y^2

Source: http://www.mathskey.com/question2answer/

Answer 2

Use the formula: (a+b) (c-d) = ac - ad + bc - bd

Answer 3

Simplify.

3p2r(p3r − 2pq3 − 14p2q4)

Answer 4

I think only one p can be taken outside as common...

3p3r(p2r - 2q3 - 14pq4)