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4

If x # y = x2 +y

x $ y = x3+y3 .

Solve:

4 $ 3 = 6 $ A .

Find A.
A.

√55

B. 5
C. -5
D. 7
See Answer & Explanation Lets Discuss
Correct answer is : C
Explanation

On Solving LHS= 43 + 33 = 64 + 27 = 91.

RHS = 6 $ A = 63 + A3

91 = 216 + A

A3  = -125 

A = -5

 

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