Question

Incógnita : x²(x²-5)+x=-5(x²-2x)+x⁴+18

Answer 1

lado izquierdo
${x}^{4 } - 5 {x}^{2} + x$
=

lado derecho
$- 5 {x}^{2} + 10x + {x}^{4} + 18$

después

$- 5 {x}^{2} + 10x + {x}^{4} + 18 - {x}^{4} + 5 {x}^{2} - x$

=

9x + 18 = 0

9x = 18
x = 18/9
x=2

Answer 2

Respuesta:

x²(x² - 5) + x = - 5(x² - 2x) + x⁴ + 18
x⁴ - 5x² + x = - 5x² + 10x + x⁴ + 18
x = 10x + 18
- 18 = 10x - x
- 18 = 9x
- 18 / 9 = x
- 2 = x

x = - 2