15 + sqrt(- 6 + 8Ã—5Ã·4) =?
Options.
A) 31	B) 32	C) 33	D) 34	E) 35
According to order of operations, inner brackets first where 8x5Ã·4 is first calculated since it has a multiplication and a division.   8x5Ã·4 = 40Ã·4 = 10   Hence   15 + sqrt(- 6 + 8Ã—5Ã·4) = 15+ sqrt(- 6 + 10)   = 15 + sqrt(4) = 15 + 16= 
<gadget id="calculator">15 + 16</gadget>
<output>31</output>
31   correct answer 31)31
<result>A</result>
15 + sqrt(- 6 + 8Ã—5Ã·4) =?