One Number Is 3 Less Than Another Number If Their Product Is 40, What Are The Numbers

One number is 3 less than another number if their product is 40, what are the numbers

Answer:

5 and 8 or -5 and -8

Step-by-step explanation:

Let x and x - 3 be the numbers.

x(x - 3) = 40

Simplify both sides of the equation

2x^2 - 3x = 40

Transpose 40 and change its sign

2x^2 - 3x - 40 = 0

Factor the left side of the equation

(x + 5 )(x − 8) = 0

Set factors equal to 0

x + 5 = 0

x = -5

x − 8 = 0

x = 8

The numbers are 5 and 8 or -5 and -8.


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