Question

14 th answer please guys

Answer 1

(5a+⅔)²-(2a-⅓)²
=(15a+2/3)²-(6a-1/3)²
=(225a²+4/9) -(36a²-2/9)
Remove the bracket:
225a²+4-36a²-2/9=0
=225a²-36a²+4-2/9=0
=189a²+2/9=0
=189a²+2
This is the answer

Answer 2

Apply the identity a2 - b2 . (a+b) (a-b)

5a + 2/3 +( 2a - 1/3 ) [ 5a + 2/3 - ( 2a - 1/3 ) ]

( 5a + 2/3 + 2a - 1/3 ) ( 5a + 2/3 - 2a + 1/3 )

( 7a + 1/3 ) ( 3a + 1 ) is the answer .

It's oswal maths paper of 9 cbse .

Hagd .