Question

X = -2 y = 3 a = 2 b = 4

2.x²+2.x.y-3x-3y

Answer 1

[x+(x²-1)][x-(x²-1)] 
[x+x²-1][x-x²+1] 
x²-x^3+x+x^3-x^4+x²-x+x²-1 
3x²-x^4-1 


(x²+3xy-z²)(x²-3xy+z²) 
x^4-3x^3y+x²z²+3x^3y-9x²y²+3xyz²-x²z²+... 
x^4-6x^3y-9x²y²+6xyz²-z^4 


(x²+3xy-z²)(x²-3xy-z²) 
x^4-3x^3y-x²z²+3x^3y-9x²y²-3xyz²-x²z²+... 
x^4-2x²z²-9x²y²+z^4 



(x²+3xy+z²)(x²-3xy-z²) 
x^4-3x^3y-x²z²+3x^3y-9x²y²-3xyz²+x²z²-... 
x^4-9x²y²-6xyz²-z^4 




(a-2b+ab)(a-2b-ab) 
a²-2ab-a²b-2ab+4b²+2ab²+a²b-2ab²-a²b² 
a²-4ab+4b²-a²b² 


(a-2b-ab)(a+2b+ab) 
a²+2ab+a²b-2ab-4b²-2ab²-a²b-2ab²-a²b² 
a²-4b²-4ab²-a²b² 





(a²+b²-ab)(b²-a²+ab) 
a²b²-a^4+a^3b+b^3-a²b²+ab^3-ab^3+a^3b-... 
-a^4+2a^3b+b^3-a²b² 


(2a-5b)(2a+5b)+(a-3b)² +(a+4b)(-a+4b) risultato: [4a²-6ab] 
4a²-25b²+a²-6ab+9b²-a²+16b² 
4a²-6ab 



(x+2y)(x-2y)-(2x-3y)²+(-x-5y)² risultato: [-2x²+12y²+22xy] 
x²-4y²-4x²+12xy-9y²+x²+10xy+25y² 
-2x²+22xy+12y² 



9x²(¹/3y-x²)(¹/3y+x²) +(3x³+2xy)²-5(-xy)² risultato:[12xalla quarta y] 
9x²(¹/9y²-x^4)+9x^6+12x^4y+4x²y²-5x²y² 
x²y²-9x^6+9x^6+12x^4y+4x²y²-5x²y² 
12x^4y