Mathematics
Grade10
Easy

Question

If a function f(x) represents the height of the football when kicked and f(x) =negative 4 x to the power of 2 end exponent plus 16 x plus 8
What is the quadratic equation if the height of the ball after the kick is 20 m?

  1. negative 4 x to the power of 2 end exponent plus 16 x minus 12 equals 0    
  2. 4 x to the power of 2 end exponent minus 16 x minus 12 equals 0    
  3. negative 4 x to the power of 2 end exponent plus 16 x minus 8 equals 0    
  4. negative 4 x to the power of 2 end exponent plus 16 x plus 20 equals 0    

Hint:

Any equation of the form p (x) = 0, where p (x) is a polynomial of degree 2, is a quadratic equation

The correct answer is: negative 4 x to the power of 2 end exponent plus 16 x minus 12 equals 0


    Step 1 of 1:
    We have given a function f(x) =negative 4 x to the power of 2 end exponent plus 16 x plus 8
    f(x) =negative 4 x to the power of 2 end exponent plus 16 x plus 8
    negative 4 x to the power of 2 end exponent plus 16 x plus 8 equals 20
    negative 4 x to the power of 2 end exponent plus 16 x plus 8 minus 20 equals 0
    negative 4 x to the power of 2 end exponent plus 16 x minus 12 equals 0

    The discriminant is the part of the quadratic formula found within the square root.

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