Question

How do I work out these?...

P(7p-3)

3(2y-1) +2 (3y+1) =

U(3u+2)+2u(u-1)=

Answer 1

1) p(7p−3)
=(p)(7p+−3)
=(p)(7p)+(p)(−3)
=7p2−3p
Answer is: 7p2-3p

2) 3(2y-1)+2(3y+1)
Distribute:
=(3)(2y)+(3)(-1)+(2)(3y)+(2)(1)

Combine Like Terms:
=6y+-3+6y+2
=(6y+6y)+(-3+2)
=12y+-1
Answer is: 12y-1

3) u(3u+2)+2u(u−1)
Distribute:
=(u)(3u)+(u)(2)+(2u)(u)+(2u)(−1)
=3u2+2u+2u2+−2u
Combine Like Terms:
3u2+2u+2u2+−2u
(3u2+2u2)+(2u+−2u)
5u2

The answer is: 5u and the unit of 2
5u2