Study guides

☆☆

More answers

Let the numbers be a,b : Then ab = -30 and b = -30/a : Substituting in a + b = 7 gives :-

a + (-30/a) = 7 : a - 30/a = 7 : multiplying all terms by a :-

a2 - 30 = 7a : a2 - 7a - 30 = 0

Solving for the roots of a quadratic equation.

a = {7 ± √(72 - [4 x -30])} ÷ 2 = 3.5 ± 6.5

Then a = 10 (3.5 + 6.5) and b = -3 (3.5 - 6.5)

Q: Find two numbers whose sum is 7 and product is -30?

Write your answer...

Submit

Still have questions?

Continue Learning about Other Math

find two positive numbers whose product is a maximum. 1.) the sum is s.

The sum of two numbers is 20 and their product is 96. Find the numbers.

9 and 6

you are a nerd

They are: 4 and -3

Related questions

19

find two positive numbers whose product is a maximum. 1.) the sum is s.

The sum of two numbers is 20 and their product is 96. Find the numbers.

asked to work out the product of two or more numbers, then you need to multiply the numbers together. If you are asked to find the sum of two or more numbers, then you need to add the numbers together.

you are a nerd

8 and 8

10 and 3

9 and 6

They are: 4 and -3

8 and 5

The numbers are 18 and 20.

Three and Seven

People also asked