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15 September, 00:59

Without simplifying, determine which of the following will represent a rational number. Select all that apply.

A.

423+3√9

B.

423-4√8

C.

423*3√9

D.

423:4√8

+3
Answers (1)
  1. 15 September, 03:23
    0
    A is rational (A=432)

    B is irrational (B=411.6862 ...) (non repeating)

    C is rational (C=3807)

    D is irrational (D=299.1061 ...)

    these are the answers but im not sure how to tell without simplifying for this

    √8 will never be rational

    √9 is a whole number therefore it will come out rational in these equations
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