Question

Buna am nev urgenta de ex acesta in seara asta oricine ma poate ajuta vrggggg sa fie metoda de clasa a 8 mulțumesc multtt

Answer 1

Răspuns:

Explicație pas cu pas:

Buna am nev urgenta de ex acesta in seara asta oricine ma poate ajuta vrggggg sa fie metoda de clasa a 8 .

a) 7x(x+2)+(x+2)²-3(x+2)=(x+2)(7x+x+2-3)=(x+2)(8x-1)    

b) (y+3)(y+2)+4(y+3)²-4y(y+3)=(y+3)(y+2+4y+12-4y)=(y+3)(y+14)      

c) (y+5)(3y-7)-(y+5)(4y-2)+3(y+5)=(y+5)(3y-7-4y+2+3)=(y+5)(-y-2)    

d) (3x-5)²-(3x-5)(2x-1)+6x(3x-5)=(3x-5)(3x-5-2x+1+6x)=(3x-5)(7x-4)    

e) (5x-4)(3x-2)²-(3x-2)²+2(x+4)(3x-2)²=(3x-2)²(5x-4-1+2x+8)=(3x-2)²(7x+3)    

f) (4y-5z)(2y+z)-(3y-z)(5z-4y)+(5z-4y)²= -(5z-4y)(2y+z)-(3y-z)(5z-4y)+(5z-4y)²=

(5z-4y)(-2y-z-3y+z+5z-4y)=(5z-4y)(-9y+5z)