Checking my math again.

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belle<3

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Aug 27, 2007
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Evaluate [(y + 3)2 – 9] ÷ 8 when y = 4.
[(y + 3)2 – 9] ÷ 8
[(4 + 3)2 – 9] ÷ 8
[(7)2 – 9] ÷ 8
[49 – 9] ÷ 8
[40] ÷ 8
40 ÷ 8
= 5

:roll: Am I right? Do the brackets mean anything?
 
belle<3 said:
Evaluate [(y + 3)2 – 9] ÷ 8 when y = 4.

[(y + 3)2 – 9] ÷ 8 ...Is that (y+3)[squared] ?
[(4 + 3)2 – 9] ÷ 8
[(7)2 – 9] ÷ 8
[49 – 9] ÷ 8
[40] ÷ 8
40 ÷ 8
= 5

:roll: Am I right? Do the brackets mean anything?
Click to expand...
 
You're right if (y + 3)2 means (y + 3) squared;
next time, MAKE SURE you post these like this: (y + 3)^2

Brackets mean you must perform the operations inside the brackets first.
 
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