Multiple choice

Find the zeros of the following quadratic polynomials and verify the relationship between the zeroes and the coefficients: $x^2-4x-5$

  1. 2 or -1

  2. -5 or 0

  3. 5 or -1

  4. 2 or 1
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C Correct answer
Explanation

To find the zeros of x^2-4x-5, factor the quadratic as (x-5)(x+1)=0. This gives the roots x=5 and x=-1.

AI explanation

We find the zeroes by factoring the quadratic polynomial x^2 - 4x - 5. We need two numbers that multiply to -5 and add to -4, which are -5 and 1. This gives the factors (x - 5)(x + 1), so setting each factor to zero yields x = 5 or x = -1.

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