Answer:
A. 3x² - 4
Step-by-step explanation:
f(x) = 2x² + 3
g(x) = x² - 7
[tex]\sf \longrightarrow (f + g)(x) \\ \\ \sf \longrightarrow f(x) + g(x) \\ \\ \sf \longrightarrow 2 {x}^{2} + 3 + {x}^{2} - 7 \\ \\ \sf \longrightarrow (2 {x}^{2} + {x}^{2} ) + (3 - 7) \\ \\ \sf \longrightarrow 3 {x}^{2} + ( - 4) \\ \\ \sf \longrightarrow 3 {x}^{2} - 4[/tex]
