Question

[nguyễn hoàng anh]

a)x^2-8x+16-y^2

b)4x^2-y^2+10y-25

c)x^2-y^2+z^2-t^2-2xz+2yt

Answer 1

[Không Tên]

a)  \(x^2-8x+16-y^2=\left(x-4\right)^2-y^2=\left(x-y-4\right)\left(x+y-4\right)\)

b)  \(4x^2-y^2+10y-25=4x^2-\left(y-5\right)^2=\left(2x-y+5\right)\left(2x+y-5\right)\)

c)  \(x^2-y^2+z^2-t^2-2xz+2yt=\left(x-z\right)^2-\left(y-t\right)^2=\left(x-y-z+t\right)\left(x+y-x-t\right)\)

p/s: chúc bạn học tốt