24 7e2X 28e6xSolution7e2x 28e6x 7e2x 28e6x since an 1an
24. 7e^2X = 28e^-6x
Solution
7e2x = 28e-6x
==> 7e2x = 28/e6x since a-n = 1/an
==> e6x e2x = 28/7
==> e6x +2x = 4 since am an = am+n
==> e8x = 4
Apply natural logarithm on both sides
==> ln e8x = ln4
==> 8x lne = ln4 since lnab = b lna
==> 8x(1) = ln4
==> x = (1/8) ln4
==> x = (1/8) ln 22
==> x = (1/8)(2) ln2
==> x = (1/4) ln2
==> x = (1/4) (0.69315)
==> x = 0.1733
Hence x = 0.1733

