Question

plzz solve this:

Factorise:-
$y {}^{3} - 7y + 6$

Answer 1

y³ - 7y + 6

=> y³ - y² + y² - 7y + 6

=> y³ - y² + y² - (6 + 1)y + 6

=> y²(y - 1) + y² - 6y - y + 6

=> y²(y - 1) + y(y - 6) - (y - 6)

=> y²(y - 1) (y - 6)(y -1)