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Solution9^x+9^x = 144 9^x =72 x = log(2³3²)/(log(3²) x=(3log2+2log3)/2log3 x=1+3/2 log(3,2)Thank you for your review
easier before you use log: 9^x=3^(2x) so 2x = lg72/lg3
Solution
9^x+9^x = 144
9^x =72
x = log(2³3²)/(log(3²)
x=(3log2+2log3)/2log3
x=1+3/2 log(3,2)
Thank you for your review
easier before you use log: 9^x=3^(2x) so 2x = lg72/lg3