If 16a^4+36 a^2 b^2+81 b^4=91 and 4a^2 +...

If `16a^4+36 a^2 b^2+81 b^4=91` and `4a^2 +9b^2-6ab=13`, then what is the value of 3ab?
यदि `16a^4+36 a^2 b^2+81 b^4=91` तथा `4a^2 +9b^2-6ab=13` है, तो 3ab का मान क्या होगा ?

A

5

B

`-3`

C

`3//2`

D

`-3//2`

Text Solution

Verified by Experts

The correct Answer is:

D

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