Question

(√2 + 5) (√2 - 6) this is the qn​

Answer 1

Answer:

-12

Step-by-step explanation:

By (a+b)(a-b) = a² -2ab + b²:

(√2)² - 2×5×6 + (6)²

2 -60 + 36

-12

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Answer 2

The step -by- step Explanation

$( \sqrt{2} + 5)( \sqrt{2} - 6) \\ = \sqrt{2} ( \sqrt{2} - 6) + 5( \sqrt{2} - 6) \\ = 2 - 6 \sqrt{2} + 5 \sqrt{2} - 30 \\ = - 28 - \sqrt{2}$

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