Question

Các bạn trả lời gấp giúp mình với

Answer 1

a: \(f\left(2\right)=3\cdot2^2-2\cdot2+1=3\cdot4-4+1=12+1-4=9\)

b: \(f\left(\dfrac{3}{4}\right)=\dfrac{-2}{3}\cdot\dfrac{3}{4}+5=\dfrac{-1}{2}+5=\dfrac{9}{2}\)

c: \(f\left(x\right)=\dfrac{2\sqrt{6}}{\sqrt{6+3}}=\dfrac{2\sqrt{6}}{3}\)

d: \(f\left(3\right)=3m+2m-1=5m-1\)