MHB Applying the laws of exponents

[drop]

Basically I don't know anyone in real life that can help me with this, so I need help checking to see if my answers are correct :)

PART A

7) Simplify (5x^3yz^2)^2(-3x^3y^4z)

My answer: -75x^9y^6z^5

8) Simplify the problem below using positive exponents only.

8a^-2b^3c^4
18a^5b^-3c

My Answer:
4b^6c^3
9a^7

 

[M R]

Re: Please check my answers - 4

Basically I don't know anyone in real life that can help me with this, so I need help checking to see if my answers are correct :)

PART A

7) Simplify (5x^3yz^2)^2(-3x^3y^4z)

My answer: -75x^9y^6z^5

8) Simplify the problem below using positive exponents only.

8a^-2b^3c^4
18a^5b^-3c

My Answer:
4b^6c^3
9a^7

Both correct.

I underlined your numerators there. :)