Question

19. 42x4 - 13x2 - 40 factorization​

Answer 1

$\huge\mathfrak{\underline{\underline{Answer:-}}}$

$\sf 42x{}^{4}-13x{}^{2}-40$

$\sf 13x{}^{2}(4x{}^{2}-1)-40$

$\sf (4x{}^{2}-1)(13x{}^{2}-40)$