Question

factorise
16x square +25 - 40x ​

Answer 1

$\huge\blue {Answer}$

${16x}^{2} + 25 - 40x$

${16x}^{2} - 40x + 25$

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

$\huge\red {Using\:Identity}$

$\large\red {{(a - b)}^{2} = {a}^{2} - 2ab + {b}^{2} }$

${(4x - 5)}^{2}$

$(4x - 5)(4x - 5)$

hope it helps you.......