Question

copie e complete o quadro

Answer 1

a=5 b=3. (a-b)² = (5-3)². a²-b²= 5²-3²
a=6 b=0. (a-b)² = (6-0)². a²-b²= 6²-0²
a=3 b=-1. (a-b)² = (3-(-1)² a²-b² = 3²-(-1)²
a=-1 b=4. (a-b)² = (-1)-4)² a²-b²= (-1)²-4²