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

Find the representation of the product of the following function

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

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Step-by-step video solution

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00:00 Convert the trinom to multiplication
00:03 Identify the coefficients of the trinom
00:07 We want to find 2 numbers whose sum equals coefficient B
00:11 and their product equals coefficient C
00:18 These are the matching numbers, let's substitute in the multiplication
00:25 And this is the solution to the question

Step-by-step written solution

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1

Understand the problem

Find the representation of the product of the following function

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

2

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) .

3

Final Answer

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

Practice Quiz

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Create an algebraic expression based on the following parameters:

\( a=2,b=2,c=2 \)

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