Question

factorise y² -11y + 18​

Answer 1

Answer:

» y² - 11y + 18

= y² - 9y - 2y + 18

= y (y - 9) - 2 (y - 9)

= (y - 9) (y - 2)

Answer 2

${y}^{2} - 11y + 18$

or,

${y}^{2} - 9y - 2y + 18$

or,

$y(y - 9) - 2(y - 9)$

or,

$(y - 9)(y - 2)$

or,

$y = 9 \\ \\ y = 2$