Respuesta :
Let [tex]x[/tex] be the unknown number. Its square is [tex]x^2[/tex]. The product of 6 and the square of the number is [tex]6x^2[/tex]. Increase this by 5 and you get [tex]6x^2+5[/tex].
If this has to equal 4, you have [tex]6x^2+5=4[/tex]