Question

is the number (3-√7)(3+√7) rational or irrational?

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Answer 1

Step-by-step explanation:

Equations such as x + 3 = 7 are first-degree equations, since the variable has an exponent of 1. The terms to ... 2 = 3(3) + 1. 12 - 2 = 9 + 1.

Answer 2

Answer:

3(3+√7)-√7(3+√7)

9+√21-√21-√49

9+0-7

2

(3-√7)(3+√7) is a rational number.

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