If you mean -9(10+x) = -243 then -90-9x = -243 and so the value of x works out as 17
910+920 = 1830
The answer is 923.
3 3^5 = 243 (3 x 3) x (3 x 3) x 3 = 243 9 x 9 x 3 = 243 81 x 3 = 243
63 + (12 x 15) = 63 + 180 = 243
910
Divide all terms by 3 and so x2+18x+81= (x+9)(x+9) when factored
The answer is: 243 x 27 = 6,651
9 x 243 = 2187
123419 + 243 = 123662
243 + 765 = 1,008
1 x 243, 3 x 81, 9 x 27, 27 x 9, 81 x 3, 243 x 1
Do you mean, 2 + 3^x = 245 ?? 2 + 3^x = 245 subtract 2 from each side 3^x = 243 use natural logs ( I always do, though you can use logs ) ln(3^x) = ln(243) you have the right in this operation to bring the exponent before the natural log x(ln3) = ln(243) divide x = ln(243)/ln(3) ( not ln(243/3) !!!! ) x = 5.493061443/1.098612289 x = 5 ----------check 2 + 3^5 = 245 2 + 243 = 245 245 = 245 ===========checks