(4x + 4)(ax – 1) – x2 +4

In the expression above, a is a constant. If the

expression is equivalent to bx, where b is a constant,

what is the value of b?

A) -5

B) -3

C) 0

D) 12

What is the value of x? enter your answer in the box. photo attached.

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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