(C+2)(c-3)= (2a-1)(3a+4)= (5x-2y)(4x-y)= (A-2)(a^-3a+6)= (2x-1)^= (3a+c)^= (y-5)(y+5)

Question

(C+2)(c-3)=
(2a-1)(3a+4)=
(5x-2y)(4x-y)=
(A-2)(a^-3a+6)=
(2x-1)^=
(3a+c)^=
(y-5)(y+5)

Comments

^ это в квадрате

Answer 1

1. C2²-3c+2c-6=c2²-c-6
2. (2a-1)(3a+4)=6а^2+8a-3a-4=6a^2+5a-4
3. (5x-2y)(4x-y)=20x²-5xy-8xy+2y²=20x²+(-5xy-8xy)+2y²=20x²-13xy=2y²
4. а^3-3a^2+6a-2a^2+6a-12= a^3-5a^2+12a-12
5. (2x-1)²=(2x)²-2*2x*1+1²
6. (3а+c)²=(3d)²+2*3ac+c²=9a²+6ac+c²
7. (y-5)(y+5)= y²-5²=y-25