Question 612946
40+6[5^2-(7-2)*sqrt(16)]


40+6[5^2-(7-2)*4]


40+6[25-(7-2)*4]


40+6[25-5*4]


40+6[25-20]


40+6[5]


40+30


70



So 40+6[5^2-(7-2)*sqrt(16)] = 70