Question

a, 25xy² + 15y²

^{b, 6x(x-y) + 3xy - 3y2}

phân tích các đa thức trên thành nhân tử

- '' giúp mik vs mik đang cần gấp''

 

Answer 1

a: \(=5y^2\left(5x+3\right)\)

b: \(=6x\left(x-y\right)+3y\left(x-y\right)\)

\(=3\left(x-y\right)\left(2x+y\right)\)

Answer 2

\(a,25xy^2+15y^2=5y^2\left(5x+3\right)\\ b,6x\left(x-y\right)+3xy-3y^2=6x\left(x-y\right)+3y\left(x-y\right)=\left(6x+3y\right)\left(x-y\right)=3\left(2x+y\right)\left(x-y\right)\)

Answer 3

a)25xy²+15y²=5y²(5x+3)

b)6x(x-y)+3xy-3y²=6x(x-y)+(3xy-3y²)=6x(x-y)+3y(x-y)=(x-y)(6x+3y)=3(x-y)(2x+y)

Answer 4

\(\text{a, 25xy^2 + 15y^2}\\ =5y^2\left(5x+3\right)\)

\(\text{b, 6x(x-y) + 3xy - 3y^2 =6x^2-6xy+3xy-3y^2}\\ =3\left(x^2-2xy+xy\right)-y^2\\ =3\left(x-xy\right)^2-y^2\\ =3\left(x-xy-y\right)\left(x-xy+y\right)\)