If a=3/-4 and b=-1/3, evaluate:
(2a^2+4b)/14b^2
A minus times a minus = positive, so negative value squared would be positive.
2* 3/-4* 3/-4 = 2 * 9/16 = 9/8
14 * -1/3 * -1/3 = 14 *1/9 = 14/9
(9/8-4/3)/(14/9)
Find common denominator to evaluate further.