Question

16x la a 2 -40x+15x=?

Answer 1

$16x^{2} -40x+15x=16x^{2}-25x=(4x+5 \sqrt{x} )(4x-5 \sqrt{x} )$

Answer 2

16x²-40x+15x=
=16x²-25x  se observa formula $a^{2} -b^{2} =(a+b)(a-b)$
=(4x+5$\sqrt{x}$)(4x+5$\sqrt{x}$)