Question

Solve for x: 2 over 5 (x − 4) = 2x. −8 negative 1 over 2 1 −1

Answer 1

`(2)/(5(x-4)) =2x`
=
`(2)/(5x-20) =2x`
2=2x(5x-20)
2=10
`x^(2) -40x`

`10 x^(2) -40x-2=0`
=-b+-
`\sqrt{ (b^(2)-4ac)/2a }`
=42.05