Question

Simplify (3 root 5+42)^2

Answer 1

Answer:

441

Step-by-step explanation:

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Answer 2

Answer:

1809+252√5

Step-by-step explanation:

(3√5+42)^2

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

[3√5]^2+2(3√5)(42)+42^2

= 45 + 252√5 + 1764

= 1809+252√5