Question

plz slove this...sums..its very argent plzzzz​

Answer 1

Answer:

I didn't solved the third one because it was confusing. Sorry for that.

Step-by-step explanation:

Hope it helps you

Answer 2

Answer:

Step-by-step explanation:

2^(x+2)+2^x-1=9=3²

or (x+2) log 2 +(x-1) log2=2log 3

(x+2+x-1) log 2=2 log 3

(2x+1) log 2=2 log 3

(2x+1)0.3=2*0.47

0.6x+0.3=0.94

0.6x=0.64

x=0.64/.6=1.06

(v) 9*81^x=27^2-x

3²*3^4x=3^3(2x-1)

3^(2+4x)=3^(6x-3

2+4x=6x-3

2x=5

x=5/2

(viii)

2^(x²-4)=3^(x²-4)

so 2=3

which is not possible

So question is wrong