Question

PLEASE TELL RIGHT ANSWER​

Answer 1

a) 3^x+4-27^x=0

3^x+4= 27^x

3^x+4= 3^3x. ( 27= 3×3×3)

bases are same power should be equal

x+4=3x

4=3x-x

4= 2x

x=2

b) 4^x -2^2x =0

2^2x - 2^2x=0. (4=2×2)

2^2x= 2^2x

bases are same power should be equal

2x= 2x