Question

simplify
(4+7√2)^2​

Answer 1

Answer:

2(57+28√2)

Step-by-step explanation:

4+7√2)^2

=16+2×4×7√2+49×2

=16+56√2+98

=114+56√2

=2(57+28√2)

Answer 2

Answer:

$({4 + \sqrt{2} })^{2} \\ = {4}^{2} + (\sqrt{2} )^{2} + 2 \times 4 \times \sqrt{2} \\ = 16 + 2 + 8 \sqrt{2} \\ = 18 + 8 \sqrt{2}$

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