Describe and correct the ONE error in finding the difference of the polynomials. (4x2 - x + 3) - (2x2 - 5x - 8)
= 4x2 - x + 3 - 2x2 - 5x + 8
= 4x2 - 2x2 - x - 5x + 3+8
= 2x2 - 6x + 11
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1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis. 3- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in part b?

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