Represent the Product of the Quadratic Function: x²-5x-50

Question

Find the representation of the product of the following function

f(x)=x25x50 f(x)=x^2-5x-50

Video Solution

Step-by-Step Solution

To solve this problem, we will factor the quadratic function f(x)=x25x50 f(x) = x^2 - 5x - 50 into two binomials:

  • Step 1: Identify the values of a=1 a = 1 , b=5 b = -5 , and c=50 c = -50 in the quadratic expression ax2+bx+c ax^2 + bx + c .
  • Step 2: We look for two numbers that multiply to c=50 c = -50 and add up to b=5 b = -5 .
  • Step 3: Consider the factor pairs of 50 -50 . Possible pairs include (1,50) (-1, 50) , (1,50) (1, -50) , (2,25) (-2, 25) , (2,25) (2, -25) , (5,10) (-5, 10) , and (5,10) (5, -10) .
  • Step 4: The correct pair is (5,10) (5, -10) because 5×(10)=50 5 \times (-10) = -50 and 5+(10)=5 5 + (-10) = -5 .
  • Step 5: Express f(x) f(x) in its factored form using these numbers: f(x)=(x+5)(x10) f(x) = (x + 5)(x - 10) .
  • Step 6: Verify the factorization by expanding: (x+5)(x10)=x210x+5x50(x + 5)(x - 10) = x^2 - 10x + 5x - 50, which simplifies to x25x50 x^2 - 5x - 50, confirming correctness.

Therefore, the correct factorization of the quadratic f(x)=x25x50 f(x) = x^2 - 5x - 50 is (x+5)(x10)(x + 5)(x - 10).

Thus, the product representation of the function is (x+5)(x10) (x+5)(x-10) .

Answer

(x+5)(x10) (x+5)(x-10)