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A rectangle has sides measuring (4x + 5) units and (3x + 10) units.
Part A: What is the expression that represents the area of the rectangle? Show your work to receive full credit.
-- To find area you have multiply both sides together so (4x + 5) * (3x + 10) units which equals 12x^2 +55x+50.
Part B: What are the degree and classification of the expression obtained in Part A?
-- l the degree is the highest exponent, so 2 and classification would be a polynomial.
Part C: How does Part A demonstrate the closure property for polynomials?
-- I NEED HELP WITH THIS PART
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For part B, you can get more specific with the classification.
Ok but can you help me with part c I am really confused @jim_thompson5910
hint for part B: the term starts with the letter Q
the closure property is the idea if you take two numbers, and do some operation (eg: multiply) then the result will be in the same set
example: take two integers, multiply them, the result is an integer. So we say the set of integers is closed under multiplication
it extends to polynomials
take any two polynomials
the result is some other polynomial
so the set of polynomials is closed under multiplication