What two numbers have a product of 146 and a sum of -91?




To find the answer to "What two numbers have a product of 146 and a sum of -91?" we first state what we know. We are looking for x and y and we know that x • y = 146 and x + y = -91.

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 = -91 and solve it for y to get y = -91 - x. Then, we replace y in x • y = 146 with -91 - x to get this:

x • (-91 - x) = 146

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 146 and a sum of -91. The numbers are:

-89.36627
-1.63373


That's it! The two numbers that have a product of 146 and a sum of -91 are -89.36627 and -1.63373 as proven below:

-89.36627 • -1.63373 ≈ 146

-89.36627 + -1.63373 = -91

Note: Answers are rounded up to the nearest five decimals if necessary so the answers may not be exact.

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