Question

Factorise the following:

a) 950 x2 y2

b} 2x2 – 8y2​

Answer 1

Step-by-step explanation:

Given a=6,d=3.

S

n

=

2

n

[

2a

+(n−1)d]

S

27

=

2

27

[12+(27−1)

(3)

]

=

2

27

[12+26×3]

=

2

27

[12+78]

=

2

27

[

90

]

=27×45

∴S

27

=

1215