Question

  help me! 

Answer 1

Bài 1:

\(f\left(\dfrac{1}{2}\right)=4\cdot\left(\dfrac{1}{2}\right)^2-7=1-7=-6\)

\(f\left(3\right)=4\cdot3^2-7=4\cdot9-7=36-7=29\)

 

Answer 2

1.

\(f\left(\dfrac{1}{2}\right)=4.\left(\dfrac{1}{2}\right)^2-7=1-7=-6\)

\(f\left(3\right)=4.3^2-7=29\)