Q7 of 90 Page 33

Find the value using the suitable identities.
(103)³

(103)³ = (100 + 3)³

Using Identity:

(x + y)³ = x³ + y³ + 3x²y + 3y²x

(103)³ = 100³ + 3³ + 3(100)²(3) + 3(3)²(100)

= 1000000 + 27 + 90000 + 2700

= 1092727

Expand the following cubes:

Find the value using the suitable identities.

(98)³

Find the value using the suitable identities.

(999)³

Factorize :

x³ + 8y³ + 6x²y + 12xy²

Questions · 90

3. Polynomials

1 2 3 4 5 6 7 1 1 1 1 2 2 2 2 3 3 3 3 3 3 3 3 4 1 1 1 1 1 2 3 4 1 1 1 1 2 2 2 2 3 4 5 6 6 6 6 7 7 7 7 7 7 1 1 1 1 1 1 2 2 2 3 3 3 4 4 4 4 4 4 5 5 6 6 6 6 7 7 7 8 8 8 8 9 10 10 11 12 12

Find the value using the suitable identities.(103)3