Question

(3+√7)^2-6√7help me​

Answer 1

Ответ:

(3+√7)²-6√7=9+6√7+7-6√7=9+7=16

Answer 2

Ответ:

(9+6√7+7)-6√7 = 9+6√7+7-6√7 = 9+7 =16

Answer 3

Sure! Let's break down the expression step by step.

First, let's simplify (3 + √7)^2:

(3 + √7)^2 = (3 + √7) × (3 + √7) = 3 × (3 + √7) + √7 × (3 + √7) = 9 + 3√7 + 3√7 + 7 (using the distributive property) = 16 + 6√7

Now, we substitute this value back into the original expression:

(3 + √7)^2 - 6√7 = (16 + 6√7) - 6√7 = 16 + 6√7 - 6√7 = 16

So, the value of the expression (3 + √7)^2 - 6√7 is 16.