it is only solve-able if "-2-x-3-9-26" is equivelent to something..... Such as: x+2-42=0 ; x=40 Notice that the equation equals Zero
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log x + 2 = log 9 log x - log 9 = -2 log (x/9) = -2 x/9 = 10^(-2) x/9 = 1/10^2 x/9 = 1/100 x= 9/100 x=.09
18 ÷ 9 x 2 = (18 ÷ 9) x 2 = 2 x 2 = 4
x^2 +9 =x^2 -9 9=-9 No solution
3x+9/2=9 3x=9-9/2 3x=9/2 x=9/6 x=3/2
81. (9 to the power of 2 = 9 x 9).