Question

Factorise the following :
y²-21y+80

Answer 1

Answer:

y^2 - 21y + 80

y^2 - (16+5)y + 80

y^2 - 16y - 5y + 80

y(y-16) -5 ( y- 16)

(y-16) (y- 5)

if y-16 = 0 , y= 16

if y- 5 =0 , y = 5

hopefully , It 'll helpful for u !

Regards :- Atul Singh vairagi