Question

change the (3+root 3) (3-root 3) into a rational number ​

Answer 1

Answer:

(3+✓3)(3-✓3)

=3^2-(✓3)^2

=9-3

=6

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Answer 2

Step-by-step explanation:

By using the identity:

(a + b)(a - b) = a^2 - b^2

We can change it into a rational number.

Let a = 3 and b = √3

Now, (3 + √3)(3 - √3) = (3)^2 - (√3)^2

=> 9 - 3

=> 6

Which is a rational number.