Hello working on this problem right here and I just can't seem to get it. 2^2x + 2^x - 12 = 0 I know the answer is ln3/ln2, but I can't figure out how to do it
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Originally Posted by Dan1990 Hello working on this problem right here and I just can't seem to get it. 2^2x + 2^x - 12 = 0 I know the answer is ln3/ln2, but I can't figure out how to do it The equation can be written as $\displaystyle (2^x)^2 + (2^x) - 12 = 0 \Rightarrow (2^x + 4)(2^x - 3) = 0$ ..... One solution is not a real number, the other is.
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