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debe estar con el procedimiento

Respuestas
Respuesta:
1. 3x+8xy+7xyz 7. j^2+8j+15
= x(3+8y+7yz) = j^2+5j+3j+15
= j(j+5)+3(j+5)
2. 3x+6xy+9xyz = (j+5)(j+3)
=3x(1+2y+3yz)
8. r^2-12r+27
3. x^2-y^2 =r^2-3r-9r+27
=(x-y)(x+y) = r(r-3)-9(r-3)
= (r-3)(r-9)
4. 16x^2- 16y^2
= 16(x^2-y^2) 9. 5x^2+11x+2
=16(x-y)1(x+y) = 5x^2+10x+x+2
= 5x (x+2)+x+2
5. x^2+2xy+y^2 = (x+2)(5x +1)
= (x+y)^2
10. b^2-12b+36
6. x^2+4x+3 = b^2-2*b*6+6^2
= x^2+3x+x+3 = (b-6)^2
= x(x+3)+x+3
= (x+3)(x+1) 11. 64-y^3
= 4^3-y^3
= (4-y)(4^2+4y+y^2)
= (4-y)(16+4y+y^2)
Espero que te sirva mi respuesta.