Listen to the conversation and say if these statements are true or false. Then listen again and check. — 1 Rachel is talking with her friend Nevita

1.а³-4а=a(a²-4)=a(a-2)(a+2)
2.ах²-ау²=a(x²-y²)=a(a-y)(a+y)
3.3а²-6ав+3в²=3(a²-2ab+b²)=3(a-b)²
4.ах²+2ах+а=a(x²+2x+1)=a(x+1)²