1) (2√10)^2-√100 2) 0.5+2(√0.39)^2

Question

1) (2√10)^2-√100 2) 0.5+2(√0.39)^2

Answer 1

1)4•10-10
10(4-1)
10•3=30

Comments

2)0.5+2•0.39

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0.5+0.78

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1.28