Functions Operations and combinations

Evaluate f(x)=-2x²+ 1 for f(-3)

Find the difference of the given functions: $$f\left(x\right)=7x^3-3x^2+4x-6$$  and  $$g\left(x\right)=6x^3-8x^2-5x-7$$  

$$f\left(x\right)=3x+1;\ \ \ \ \ g\left(x\right)=5x-4$$   $$Find\ \left(f-g\right)\left(x\right)$$  

$$f\left(x\right)=x^2+1;\ \ \ \ \ \ g\left(x\right)=x-4$$   $$Solve\ \left(f+g\right)\left(2\right)$$  

$$f\left(x\right)=x^2+1;\ \ \ \ \ \ g\left(x\right)=x-4$$   $$Solve\ \left(f-g\right)\left(-1\right)$$  

$$f\left(x\right)=x^2+1;\ \ \ \ \ \ g\left(x\right)=x-4$$   $$Solve\ \left(f-g\right)\left(3t\right)$$  

Find (fg)(x) $$f\left(x\right)=3x-4\ and\ g\left(x\right)=x+2$$  

Given  $$f\left(x\right)=3x^2-2x+1$$  and  $$g\left(x\right)=x-4$$  , find  $$\left(f\times g\right)\left(x\right)$$  

Given $$f(x)=x^2+5$$   and $$g(x)=2x^3-1$$  , find $$\left(\frac{f}{g}\right)\left(-3\right)$$ .