The product of two consecutive odd integers is 63. Find the numbers
1. What information is given?
2. What are you asked to find?
3. Write a representation using variable x. 4. What is the working equation?
5. Solve the equation and check the answer
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Answer:
Step-by-step explanation:
You may denote the smaller of the two consecutive odd numbers as x; then the next odd integer number is (x+2).
In this way, you get this equation
x*(x+2) = 63.
You reduce it then to the standard algebraic form
x^2 + 2x - 63 = 0.
You may solve it by factoring
(x+9)*(x-7) = 0
which gives you the roots x= -9, x= 7.
The first root gives the solution (the pair) (-9,-7); the other root gives you the pair (7,9).
We just observed these pairs in the above version 1) and 2).
You also may solve equation (1) using the quadratic formula.
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