4^х+2^х-20=0
t^2+t-20=0
t=4
t=-5
2^x=4
2^x=-5
x=2
ответ 2
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Verified answer
4^х+2^х-20=0
t^2+t-20=0
t=4
t=-5
2^x=4
2^x=-5
x=2
ответ 2