CBSE Class 10 Answered
4^(x+1)+4^(1-x)=10 solve and
2^2x-3.2^(x+2)+32=0
Asked by | 02 Dec, 2012, 09:33: PM
Expert Answer
22 x 3.2( x + 2) + 32 = 0
? 22 x 3.2 x .22 + 32 = 0
? 22 x 3.2 x .4 + 32 = 0
? 22 x 12.2 x + 32 = 0
? 22 x 8.2 x 4.2 x + 32 = 0
? 2 x (2 x 8) 4 (2 x 8) = 0
? (2 x 4) (2 x 8) = 0
? 2 x = 8 or 2 x = 4
? 2 x = 23 or 2 x = 22
? x = 3 or x = 2
Thus, the value of x is 3 or 2.
Answered by | 03 Dec, 2012, 10:17: AM
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