Question

ayar el factor comun por agrupacion 

1. x2+x+xy+y

2. 3x3+2x2y+3xy2+2y3

3. a2+ab+ax+bx

4. 3m-2n-2nx4+3mx4

5. x+x2-xy2-y2

 

ayar los trinomios cuadrados perfectos 

 

1. x2+6x+9

2. x2-14x+49

3. y2+10y+25

4. p2-8p+16

5. z2-22z+121

Answer 1

1.  x²+x+xy+y=x²+xy+x+y=x(x+y)+(x+y)=(x+y)[x+1]
2.  3x³+2x²y+3xy²+2y³=x²(3x+2y)+y²(3x+2y)=(3x+2y)[x²+y²]
3.  a²+ab+ax+bx=a(a+b)+x(a+b)=(a+b)[a+x]
4.  3m-2n-2nx⁴+3mx⁴=(3m-2n)-x⁴[3m-2n]=(3m-2n)[1-x⁴]
5.  z²-22z+121=z²-2×11×z+11²=(z-11)²


1.  x²+6x+9 =(x+3)²
2.  x²-14x+49=(x-7)²
3.  y²+10y+25=y²+2×5×y+5²=(y+5)²
4.  p²-8p+16=p²-2×4×p+4²=(p-4)²
5.  z²-22z+121=z²-2×11×z+11²=(z-11)²
suerte :D