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Find the domain and range of the quadratic function f(x) = x2 + 3x + 4. D
R_
a. D {X €R! x 4};R {y e RI y 4-4}
b. D {x/x = N; R {yly e N}
c. D {XER| **-3);R fy e RI y#3)
d. Dxx € R};R yly e R}​