Math Problem Statement

what multiplies to 182 and adds to -27

Solution

To find two numbers that multiply to 182 and add to -27, let the numbers be xx and yy. They must satisfy the following equations:

  1. xy=182x \cdot y = 182
  2. x+y=27x + y = -27

Step 1: Solve for one variable

From x+y=27x + y = -27, solve for yy: y=27xy = -27 - x

Step 2: Substitute into the product equation

Substitute y=27xy = -27 - x into xy=182x \cdot y = 182: x(27x)=182x \cdot (-27 - x) = 182 27xx2=182-27x - x^2 = 182 x2+27x+182=0x^2 + 27x + 182 = 0

Step 3: Solve the quadratic equation

The equation to solve is: x2+27x+182=0x^2 + 27x + 182 = 0 Using the quadratic formula: x=b±b24ac2ax = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a} Here, a=1a = 1, b=27b = 27, and c=182c = 182. Substitute these values: x=27±2724(1)(182)2(1)x = \frac{-27 \pm \sqrt{27^2 - 4(1)(182)}}{2(1)} x=27±7297282x = \frac{-27 \pm \sqrt{729 - 728}}{2} x=27±12x = \frac{-27 \pm \sqrt{1}}{2} x=27±12x = \frac{-27 \pm 1}{2}

Step 4: Find the two roots

x=27+12=262=13x = \frac{-27 + 1}{2} = \frac{-26}{2} = -13 x=2712=282=14x = \frac{-27 - 1}{2} = \frac{-28}{2} = -14

Step 5: Determine yy

If x=13x = -13, then y=27(13)=14y = -27 - (-13) = -14.
If x=14x = -14, then y=27(14)=13y = -27 - (-14) = -13.

Final Answer:

The two numbers are: 13 and 14\boxed{-13 \text{ and } -14}

These numbers multiply to 182182 and add to 27-27.


Would you like more details or have additional questions?

Related Questions:

  1. How does the quadratic formula work in other cases?
  2. What are practical applications of this type of problem-solving?
  3. Can we solve this problem graphically using a parabola?
  4. How do we factorize quadratic equations by hand?
  5. What is the importance of the discriminant in solving quadratics?

Tip:

Always verify your solution by substituting the values back into the original equations.

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Math Problem Analysis

Mathematical Concepts

Algebra
Quadratic Equations

Formulas

Product-Sum Relationship: x * y = 182, x + y = -27
Quadratic Formula: x = (-b ± √(b² - 4ac)) / 2a

Theorems

Quadratic Formula Theorem

Suitable Grade Level

Grades 8-10