Question

Помогите пж с алгеброй

Answer 1

No1
1) (4x+1)(3-x) = 12x-4x^2+3-x=-4x^2+11x+3
2) (4x+1)(4x-1) = 16x^2-1
3) (4x+1)^2 = 16x^2+8x+1
4) (3-2x)^2 = 9-12x+4x^2
No2
1) 5x^2+45x = 5x(x+9)
2) y^2-2y^2 = -y^2
3)4a-16a^2+20 = 4(a-4a^2+5)
4) 3(a+c)-y(a+c) = (a+c)(3-y)
5) 6y(5c-1)+(5c-1) = (5c-1)(6y+1)