Jawabanmu

2014-09-01T19:18:43+07:00


a + b = 6
ab = 4
a² + b² =?

( a + b )² = 6²
a² + 2ab + b² = 6²
a² + 2.4 + b² = 6²
a² + 8 + b² = 36
a² + b² = 36 - 8 = 24