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Alinara [238K]
3 years ago
12

Pls helpppp meeeeee :(

Mathematics
1 answer:
Alja [10]3 years ago
7 0

Answer:

Sam

30

Step-by-step explanation:

Sam made a mistake when he said 10^2 -20. The steps should have been:

2n^2-20=2(5)^2-20\\2(25)-20\\50-20=30

You are supposed to square 5 first before multiplying 2. Sam multiplied by 2 first. The correct answer is 30.

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