Question

5b^2-2a^2/2a^2
a=3,7
b=7,4

Answer 1

$(5b^2 - 2a^2)/2a^2\\a = 3.7\\b = 7,4\\(5b^2 - 2a^2)/2a^2 = 5b^2/2a^2 - 2a^2/2a^2 = 5/2*(b/a)^2 - 1 = 5/2*(7.4/3.7)^2 - 1 = 5/2*2^2 - 1 = 10 - 1 = 9$