Question

17. Se a' + b2 = 34 e ab = 15, calcule o valor de (a+b)? - 4 = ?
c) 8
a) 24
d) 16
b) 32​

Answer 1

(a+b)² - 4 = (a²+b²) +2.ab - 4

(a+b)² - 4 = ( 34 ) +2.(15) - 4

(a+b)² - 4 = 34 + 30 - 4

(a+b)² - 4 = 60