Question

If
1 / (x-5) (x-7) = A / x-5 + 1 / 2(x-7) then find the A​

Answer 1

217

216

215

None of these

Answer :

C

Solution :

Given 27x−5=(32)x−7

⇒27x−5=25x−35(∵32=25)

⇒7x−5=5x=35

⇒2x=−30

⇒x=−15

∴12x=12−15=215

Hence , the correct option is (c).

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