Question

Q.2 Factorize.

1. x²+9x+18
Options:-1) (x-6)(x+3)
2) (x+6)(x-3)
3) (x+6)(x+3)

2. y³-27
Options:-1) (y+3)(y²-3y+9)
2) (y-3)(y²+3y+9)
3) (y-3)(y²-3y+9)​

Answer 1

Answer:

1. x2−9x+18=x2−6x−3x+18

                        =x2−6x−3x+3×6

                        =x(x−6)−3(x−6)

                        =(x−3)(x−6)

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