To find the answer to "What two numbers have a product of 92 and a sum of -34?" we first state what we know. We are looking for x and y and we know that x • y = 92 and x + y = -34.
Before we keep going, it is important to know that x • y is the same as y • x and x + y is the same as y + x. The two variables are interchangeable. Which means that when we create one equation to solve the problem, we will have two answers.
To solve the problem, we take x + y = -34 and solve it for y to get y = -34 - x. Then, we replace y in x • y = 92 with -34 - x to get this:
x • (-34 - x) = 92
Like we said above, the x and y are interchangeable, therefore the x in the equation above could also be y. The bottom line is that when we solved the equation we got two answers which are the two numbers that have a product of 92 and a sum of -34. The numbers are:
-31.03567
-2.96433
That's it! The two numbers that have a product of 92 and a sum of -34 are -31.03567 and -2.96433 as proven below:
-31.03567 • -2.96433 ≈ 92
-31.03567 + -2.96433 = -34
Note: Answers are rounded up to the nearest five decimals if necessary so the answers may not be exact.
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