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GalinKa [24]
3 years ago
14

1. Tính:

Mathematics
1 answer:
V125BC [204]3 years ago
5 0

Answer:

1.b (2+x)*(2-x)-4

2.a 3*(x^2-2x+1)=3x^2+3

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Answer:

B. Yes, there are at least 10 people with weak bones and 10 people with strong bones in each group.

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The correct answer is:

B. Yes, there are at least 10 people with weak bones and 10 people with strong bones in each group.

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4.8

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