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)
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
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