Answer:
a. 9x^4
b. 3 x^5y
Step-by-step explanation:
a. 5x^4 + 4x^4
Combine like terms
9x^4
b. 12x^5 y − 9x^5 y
Subtract like terms
3 x^5y
Answer:
C) square root of 12
Step-by-step explanation:
A^2+b^2=c^2
A=2
B=?
C=4
2^2=4
4^2=16
4+b^2=16
Subtract 4
B^2=12