Question

giai ho mk nha

Answer 1

16x²+24xy+9y²=(4x)²+2*4x*3y+(3y)²=(4x+3y)²=[4x-(-3)y]²

=> giá trị của m là -3

Answer 2

\(16x^2+24xy+9y^2=\left(4x-my\right)^2\)

\(\Leftrightarrow\left(4x\right)^2+2\times4x\times3y+\left(3y\right)^2=\left(4x-my\right)^2\)

\(\Leftrightarrow\left(4x+3y\right)^2=\left(4x-my\right)^2\)

\(\Rightarrow m=-3\)

Answer 3

\(16x^2+24xy+9y^{^2}=\left(4x\right)^2+2.4x.3y+\left(3y\right)^2=\left(4x+3y\right)^2\)Dễ thấy -my=3y

=>-m=3

=>m=-3

Answer 4

là -3 chứ còn gì nữa

Answer 5

16\((x)^{2}\)+24xy+9\((y)^{2}\)=\((4x)^{2}\)+2.(4x).(3y)+\((3y)^{2}\)=\((4x+3y)^{2}\) .

\(\Rightarrow\)\((4x-my)^{2}\)=\((4x+3y)^{2}\).

\(\Rightarrow\)-m=3.

\(\Rightarrow\)m=-3

Answer 6

-3