Question

Which of the following is in standard form of quadratic? f(x)=-5x^(2)-3x+9 f(x)=-5(x+4)(x-2) f(x)=-5(x-1)^(2)+6 f(x)=2x-8

Answer 1

Answer:f(x)=-5x^(2)-3x+9 this is the standard form

1. Step-by-step explanation: Standard form of quadratic equation is
2. a
   `x^(2)`+b
   `x`+c.
3. so the first was in standard form.

Answer 2

Explanation: