Question

Преобразуйте в многочлен. 1) (a-3)^2. 2) (2y+5)^2. 3) (4a-b)(4a+b) 4) (x^2+1)(x^2-1)

Answer 1

1)a^2-6a+9
2)4y^2+20y+25
3)16a^2-b^2
4)x^4-1

Answer 2

1) (a-3)^2 = a^2 - 6a + 9

2) (2y+5)^2 = 4y^2 + 20y + 25

3) (4a-b)(4a+b) = 16a^2 - b^2

4) (x^2+1)(x^2-1) = x^4 - 1