# Algebra

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Simplify:

4x^2 y^3 Z
----------- (divided by)
5y^4 Z^3

4x
------ (divided by)
5yz^2

• Algebra -

With monomials, you can look at each unknown (variable) individually when you do a division:
4x²
------- = 4x²/5
5

y³/y4 = 1/y

z/z³ = 1/z²

So putting everything together:
4x^2 y^3 Z / 5y^4 Z^3
4x²/(5yz²)

• Algebra -

Explain the difference in answers between the following exponential expressions. Include the solutions?

7^2, -7^2,(-7)^2, and 7^-2

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