-16ав+8(а+в)² при а=√14,в=√5

Question

-16ав+8(а+в)² при а=√14,в=√5

Answer 1

-16ab+8(a+b)²=-16ab+8(a²+2ab+b²)=-16ab+8a²+16ab+8b²=8a²+8b² = 8(√14)²+8(√5)²=8*14+8*5=112+40=152