Question

expand and simplify (4+ root 2)(6 - root 2) give your answer in the form b + c root 2

Answer 1

Answer:

22+2$\sqrt{2}$

Step-by-step explanation:

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Answer 2

Answer:

22 + 2√2

Step-by-step explanation:

Given:

    (4 + √2)(6 - √2)

    (b + c√2) = ?

Solution:

(b + c√2) = (4 + √2)(6 - √2)

               = 24 - 4√2 + 6√2 -√2*2

               = 24 - 4√2 + 6√2 - 2

               = 22 + 2√2

(b + c√2) = 22 + 2√2