To demonstrate the Closure Property of multiplication of polynomials, we need to multiply the given polynomials \((12x^2 - 3)(4y^3 + 5x^2)\) and simplify the expression.
Let's perform the multiplication step-by-step:
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Distribute each term in the first polynomial to each term in the second polynomial: \[ (12x^2)(4y^3) + (12x^2)(5x^2) + (-3)(4y^3) + (-3)(5x^2) \]
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Now, calculate each of these products:
- \(12x^2 \cdot 4y^3 = 48x^2y^3\)
- \(12x^2 \cdot 5x^2 = 60x^4\)
- \(-3 \cdot 4y^3 = -12y^3\)
- \(-3 \cdot 5x^2 = -15x^2\)
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Collecting all these terms together gives: \[ 48x^2y^3 + 60x^4 - 12y^3 - 15x^2 \]
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Rearranging the terms, we can express it as: \[ 60x^4 + 48x^2y^3 - 15x^2 - 12y^3 \]
Now looking at the options:
- \(x^2y^3 + 5x^4 - 8y^3 - 15x^2\)
- \(52x^2y^3 + 2x^4 - 8y^3 + 15x^2\)
- \(2x^2y^3 + 52x^4 - 12y^3 - 15x^2\)
None of the provided responses seem to correspond directly to the simplified polynomial we derived through multiplication.
However, based on the Closure Property, we can conclude that multiplying two polynomials yields another polynomial, which we have just demonstrated.
Thus, the product \((12x^2 - 3)(4y^3 + 5x^2)\) produces a polynomial: \[ 60x^4 + 48x^2y^3 - 15x^2 - 12y^3 \]
This demonstrates the Closure Property of multiplication of polynomials because the result is a polynomial. If you are looking for one of the exact response options provided, please double-check to see if there's a mismatch or typo, as none are accurate according to the calculation here.