Question

phân tích đa thức thành nhân tử 5x^2+10xy-4x-8y

Answer 1

5x² + 10xy - 4x - 8y

= 5x(x + 2y) - 2(x - 2y)

= (5x - 2)(x + 2y)

Answer 2

=(5x² + 10xy) - (4x + 8y) = 5x.(x + 2y) - 4.(x + 2y) = (5x - 4).(x + 2y)

Answer 3

\(5x^2+10xy-4x-8y=\left(5x^2+10xy\right)-\left(4x+8y\right)=5x\left(x+2y\right)-4\left(x+2y\right)=\left(5x-4\right)\left(x+2y\right)\)

Answer 4

5x² + 10xy - 4x - 8y

= (5x² + 10xy) - (4x - 8y)

= 5x(x + 2y) - 2(x - 2y)

= (5x - 2)(x + 2y)

Answer 5

\(5x^2+10xy-4x-8y\\=(5x^2+10xy)-(4x+8y)\\=5x(x+2y)-4(x+2y)\\=(x+2y)(5x-4)\)