fungsi g : x ⇒ 2x² - 5, tentukan : a. g (m) = 3 b. g (m) = 67

a. g(m)=3
=> 2m^2 -5=3
=> 2m^2=8
=> m^2=4
=> m=2
b. g(m)=67
=> 2m^2 -5=67
=> 2m^2=72
=> m^2=36
=> m=6
maaf caranya kurang rapi, semoga dapat membantu