Respuesta :

DᴀʀᴋPᴀʀᴀᴅᴏx

[tex]▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ { \huge \mathfrak{Answer}}▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ [/tex]

let's solve :

first step : we have to expand the term in L.H.S

  • [tex](x + 3)(x - 5)[/tex]
  • [tex] {x}^{2} - 5x + 3x - 15[/tex]
  • [tex] {x}^{2} - 2x - 15[/tex]

now, let's equate the equations to find the value of m :

  • [tex] {x}^{2} - 2x - 15 = {x}^{2} + mx - 15[/tex]

value of m = -2

SHEEESEESHHHH
The value and the answer is m = -2