Question

phân tích

tìm x 

 

Answer 1

d,3x^2+8xy+5y^2=3x^2+3xy+5xy+5y^2=3x(x+y)+5y(x+y)=(x+y)(3x+5y)

e,=(x+2)x^2-2x+4))-(x+2)(x-4)=(x+2)(x^2-3x+8)

Answer 2

\(3x^2+8xy+5y^2\)

= 3x² + 3xy + 5xy + 5y²

= 3x( x+y) + 5y( x+y)

= (3x+5y)(x+y)

 

Answer 3

d) 3x^2+8xy+5y^2= (3x^2+3xy)+(5xy+5y^2)= 3x(x+y)+5y(x+y)=(x + y)(3x+5y) 

  

Answer 4

d,3x^2+8xy+5y^2=3x^2+3xy+5xy+5y^2=3x(x+y)+5y(x+y)=(x+y)(3x+5y)

e,=(x+2)x^2-2x+4))-(x+2)(x-4)=(x+2)(x^2-3x+8)