16-18. perform the following mathematical expression

16. 9×(2+4)² -3=
17. 3²÷(2+5-4)²+5+=
18. 11+6×(5-3)²=​


Sagot :

Answer:

16.9×(2+4)² -3=321

17. 3²÷(2+5-4)²+5+=6

18. 11+6×(5-3)²=​35

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