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Mazyrski [523]
3 years ago
7

1. 20-2*3^2 (Explain)

Mathematics
1 answer:
VLD [36.1K]3 years ago
7 0
<span>20 - 2 * 3^2

Remember PEMDAS.
Parentheses
Exponents
Multiplication/Division
</span>Addition/Subtraction

There are no parentheses, but there is an exponent. So first you must do 3^2.

<span>20 - 2 * (3*3)
</span>20 - 2 * 9

Next is multiplication/division. Multiply -2 by 9.

20 - 2 * 9
20 - 18

Lastly, you subtract.

20 - 18
2

The answer is 2.
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