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3 years ago

The product of three integers x, x+2, and x-5 is 240. What are the integers?

Mathematics

1 answer:

Dafna11 [192]3 years ago

7 0

Answer:

8, 10, 3

Step-by-step explanation:

For finding real solutions to cubic equations and those of higher degree, I find a graphing calculator to be useful. The problem can be cast in the form ...

f(x) = 0

where f(x) is the difference between the product of the integers and 240:

f(x) = x(x +2)(x -5) -240

Then all we need to do is ask the calculator to show the x-intercept. It is x=8.

So, the three integers are ...

x = 8
x+2 = 10
x -5 = 3

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Step-by-step explanation:

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