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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