1.

а) b*(5b+3a)

б) b^5*(7b^2–5)

в) –3ab*(b+2a)*(b+a)

2.

а) (p–q)*(8p+q)

б) (x+6)*(b–c)

3.

а) 4*(c–4d^2)*(c+4d^2)

б) –2(3a–1)^2

в) (1/3a+b)*(1/9a^2–1/3ab+b^2)

4.

x^2*(x–4)–16(x–4)=0

(x–4)*(x^2–16)=0

x–4=0

x^2–16=0

x1=4

x2=–4