Question

Factorise the following expression p square -10p+21

Answer 1

Answer:

can't be................ .... .factorise

Answer 2

$\huge{\mathfrak{\blue{\underline{Answer}}}}$

$p {}^{2} - 10p + 21 \\ p {}^{2} - 3p - 7p + 21 \\ p(p - 3) - 7(p - 3)$

$\huge{\mathfrak{\blue{\underline{(p-7)(p-3)}}}}$