Which of the following expressions is equivalent to 2a+4b+6c ?

Which of the following expressions is equivalent to 25 x ^(2) y ^(4)-1 ?

Which of the following expression is equivalent to 5a+10b+15c?

(4-a^2)-(2a^2-6) Which of the following expressions is equivalent to the one above?

Which of the following expressions is equivalent to -x^(1/4) ?

Which of the following expressions is equivalent to 49x^(2) + 81 ?

Whenever a,b, and c are positive real numbers, which of the following expressions is equivalent to log_4 u-2 log_8 b+1/2 log_4 c ?

Which of the following expressions is equivalent to (x/3 + 1/2)/(2/3 - 1/4) ?

(3x^4+2x^3-7)+(4x^6-5x^3+9) Which of the following expressions is equivalent to the expressions above?

(16a^(4)-81b^(4))/(8a^(3)+12a^(2)b+18ab^(2)+27b^(3)) Which of the following expresssion is equivalent to the expression above?