Question

ab²+b²=100 e (a+b)²=196 qual é o valor de ab

Answer 1

a²+b²=100 e (a+b)²=196


a²+b² = 100

(a+b)²=196


a²+b² + 2ab = 196 ==> 100 + 2ab = 196

2ab = 196 - 100 ==> 2ab = 96

ab = 48