Question

Factorize (iv) ycube + ysquare - y- 1​

Answer 1

Answer:

( y - 1 ) ( y + 1 ) ( y + 1)

Step-by-step explanation:

y³ + y² - y - 1 _____________________ Can you see any thing common?

y² ( y + 1 ) - 1 ( y + 1 ) _______________ y² is common in ( y³ + y² )

and ( - 1 ) is common in ( - y - 1 )

( y² - 1 ) ( y + 1 ) __________________ Can you figure out which identity

being applied here?

( y² - 1² ) ( y + 1 ) _________________ You must be knowing

----> ( a² - b² ) = ( a - b ) ( a + b )

( y - 1 ) ( y + 1 ) ( y + 1) ____________ So it is your answer