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10-22.
Remember the properties of logarithms.
log2(x(x − 2)) = 3
x 2 − 2x = 8
x 2 − 2x − 8 = 0
(x − 4)(x + 2) = 0
4, since logarithms of negative numbers are undefined.
See part (a).
Remember the properties of logarithms.
log2(x(x − 2)) = 3
x 2 − 2x = 8
x 2 − 2x − 8 = 0
(x − 4)(x + 2) = 0
4, since logarithms of negative numbers are undefined.
See part (a).