Question

O factorisar 15x⁴-11x²-12​

Answer 1

Respuesta:

$\\\tt (3 {x}^{2} - 4)(5 {x}^{2} + 3)$

Explicación paso a paso:

$\\\tt 15{x}^{4} - 11 {x}^{2} - 12 \\ \\\tt = 15 {x}^{4} - 20 {x}^{2} + 9 {x}^{2} - 12 \\ \\\tt = 5 {x}^{2} (3 {x}^{2} - 4) + 3(3 {x}^{2} - 4) \\ \\\tt = (3 {x}^{2} - 4)(5 {x}^{2} + 3)$