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Two numbers are negative reciprocals if their product is -1. The numbers 1/2 and -2 are negative reciprocals. Their product is -1. This is often seen in problems involving the slopes of two lines. The slopes of perpendicular lines are negative reciprocals. Their product is -1.

Q: Two numbers are if their product is -1?

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Any two numbers whose product is '1' are each others' reciprocals.

two numbers with a product of 1 are called elements

1*1 = 1

The LCM of two numbers is their product if and only if the two numbers are co prime, that is their HCF is 1. Otherwise their LCM in not their product, in fact, it is their product divided by their HCF.

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Related questions

If two numbers are reciprocals, then their product is 1. If the product of two numbers is 1, then they are reciprocals.

Any two numbers whose product is '1' are each others' reciprocals.

If the HCF (Highest Common Factor) of two numbers is 1, then the two numbers are relatively prime and their LCM is the product of the two numbers.

two numbers with a product of 1 are called elements

1*1 = 1

1

1 and 1

When the two numbers are relatively prime (their GCF is 1), their LCM is their product.

The LCM of two numbers is their product if and only if the two numbers are co prime, that is their HCF is 1. Otherwise their LCM in not their product, in fact, it is their product divided by their HCF.

1

dude is 1,2

The product of any two numbers, neither of which is 1, is never a prime number.