We have a = {a+b√2 | a, b∈z}. prove that a is a commutative ring in relation with addition and multiplication of real numbers.

Which value is not a solution of 8x^3 – 1 = 0

Which of the following pairs of functions are inverses of each other? o a. f(x)=x72+8 and 96-9 = 7/x+2) =8 o b. f(x)= 6(x - 2)+3 and g(x) - *#2-3 o c. $4) = 5(2)-3 and 90- 4*: 73 o d. f(x) = 6)-12 and 910 – +12

3x = 729 solve for x plz . it's urgent. will mark