We have to solve the equation 289^x - 17^(x+1) + 16 = 0.
Notice that 289 = 17^2.
Rewrite the equation that is given
in the following way to arrive at a quadratic
equation.
289^x - 17^(x+1) + 16 =
0
(17^2)^x - 17^(x+1) + 16 =
0
(17^x)^2 - 17^x*17 + 16 =
0
Let 17^x = y
y^2 - 17y + 16
= 0
y^2 - 16y - y + 16 = 0
y(y
- 16) - 1(y - 16) = 0
(y - 1)(y - 16) =
0
y = 1 and y = 16
As y =
17^x
17^x = 1 and 17^x = 16
x
= 0 and x =
The equation has two
solutions x = 0 and x =
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