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A. a^6c^3

Step-by-step explanation:

Multiply the exponents of a^2 and c (c is equal to c^1)

2 times 3 is 6

1 times 3 is 3

A. a^6c^3

Hope this helps!

its C

Step-by-step explanation:

i just did this in math class haha good luck! :)

Part A: 3x^4 + 2x^3 - 5x^2
We know it's in standard form because it is written from highest exponent to the lowest.

Part B: the closure property states that adding a polynomial to another polynomial, will always result in a Polynomial.

Ex: (3x^4 + 6x^3 - 5x^2) + (4x^4 - 2x^3 + 3x^2)

= 7x^4 + 4x^3 -2x^2

Therefore, a polynomial results.

Check out this prezi. It helps explain it if this doesn't help.
https://prezi.com/m/dd79gzcq4des/closure-properties-for-polynomials/