यदि 9a^(2) + 4b^(2) + c^(2) + 21 = 4 (3a...

यदि `9a^(2) + 4b^(2) + c^(2) + 21 = 4 (3a + b -2c )`, तो `(9a + 4b -c)` का मान है:

A

2

B

16

C

6

D

12

Verified by Experts

The correct Answer is:

D

यदि 9a^(2) + 4b^(2) + c^(2) + 21 = 4 (3a + b -2c ), तो (9a + 4b -c) का...
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If 9a^(2)+4b^(2)=18ab, then log(3a+2b)=
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If (3a-2b)=9 and ab=7 then 9a^2+4b^2=
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Fractorise: 9a^(2) -b ^(2)+4b-4
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गुणनखंड कीजिए- 9a^(2) - 4b^(2)
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If 9a^2 + 4b^2 = 18ab, then log (3a + 2b) =
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