math check
posted by Lauren on .
Peform each indicated operation and simplify. Can you please check my answers. Thank you.
A)(x^2+2x3)+ (2x^2x+1)
Answer: 3x^2+x2
B) (x^3+2x^25)+(x^2x+6)
Answer:x^3+3x^2x+1
C) (3y^2x+7)(y^22x+3)
Answer:4y^23x+10
D)(2x^2xy+y^2)(3x^2+xy+y^2)
Can you help me with the answer for this one Im confused. thanks

a, b right
C should be 2y^2+x4 There is a  sign before the second ( )
d.
5x^22xy check that.