Bjr
Equation 1 :
[tex]x {}^{3} = 25[/tex]
[tex]x = \sqrt[3]{25} [/tex]
Equation 2 :
[tex]x {}^{2} - 6x = 16[/tex]
[tex]x {}^{2} - 6x - 16 = 0[/tex]
[tex]x {}^{2} + 2x - 8x - 16 = 0[/tex]
[tex]x \times (x + 2) - 8x - 16 = 0[/tex]
[tex]x \times (x + 2) - 8(x + 2) = 0[/tex]
[tex](x + 2)(x - 8) = 0[/tex]
x + 2 = 0 / x - 8 = 0
x = -2 / x - 8 = 0
x = -2 / x = 8
x1 = -2 / x2 = 8
Voilà !
