Question

 a)\(\left(4x+3y-10\right)^2+\left(4x-3y+2\right)^2\)             b)\(X^2-5x=0\)        giúp

Answer 1

`a, = 16x^2 + 9y^2 + 100 - 80x - 60y + 24xy + 16x^2 + 9y^2  + 4 + 16x - 24xy - 12y`

`= 32x^2 + 18y^2 + 104 - 64x -72y`

`b, x^2-5x =0`

`x(x-5) = 0`

`x = 0` hoặc `x = 5`

Answer 2

b: =>x(x-5)=0

=>x=0 hoặc x=5

a: \(=\left(4x+3y\right)^2-20\left(4x+3y\right)+100+\left(4x-3y\right)^2+4\left(4x-3y\right)+4\)

\(=32x^2+18y^2-80x-60y+16x-12y+104\)

\(=32x^2+18y^2-64x-72y+104\)