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

24. 7e^2X = 28e^-6xSolution7e2x = 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

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