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What number must be added to the express...

What number must be added to the expression `16 a^(2) - 12 a` to make it a perfect square ?

A

`(9)/(4)`

B

`(11)/(2)`

C

`(13)/(2)`

D

16

Text Solution

Verified by Experts

The correct Answer is:
A
`16a^(2)-12a`
`=(4a)^(2)-2xx4axx(3)/(2)" "((3)/(2))^(2)=(9)/(4)`
अतः `16a^(2)-12a` में `(9)/(4)` जोड़ने पर यह पूर्ण वर्ग बन जाएगा।
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