evaluate : 12 + sqrt ( - 5 + 7 ã — 8 ã · 4 ) = ?
"according to order of operations , inner brackets first where 7 x 8 ã · 4 is first calculated since it has a multiplication and a division . 7 x 8 ã · 4 = 56 ã · 4 = 14 hence 12 + sqrt ( - 5 + 7 ã — 8 ã · 4 ) = 12 + sqrt ( - 5 + 14 ) = 12 + sqrt ( 9 ) = 12 + 81 = 93 correct answer d ) 93"
add(12, sqrt(subtract(divide(multiply(7, 5), 4), 5)))