Question

Scrieti ca produs de doi factori:
5-(ax)totul la a doua
4x la a doua -7
13-x la a doua

Answer 1

$5 - {(ax)}^{2} = ( \sqrt{5} - ax)( \sqrt{5} + ax)$

$4 {x}^{2} - 7 = (2x - \sqrt{7} )(2x + \sqrt{7} )$

$13 - {x}^{2} = ( \sqrt{13} - x)( \sqrt{13} + x)$