the sum of two numbers is -17. Their product is 66. Find the numbers

Question

Your answer

E♥Lim · Answer 1 · 2011-11-02T17:55:18+0000

A = one number

B = the other number

A + B = -17 ← Call this eq1

A = - B - 17

A x B = 66 ← call this eq2

A = 66/B ← eq3

substitute eq3 to eq1

66/B + B = -17

66 + B² = -17B

B² + 17B + 66 = 0

B = [-b ±√B² - 4ac]/2a

B = [-17 ±√(-17)² - 4(66)] / 2

B = -17 ±√289 - 264 ]/2

B = [ -17 ± √25]/2

B = [ -17 + 5]/2

B = -12 /2

B = - 6

Substitute B = -6 to eq 2

A x B = 66 ← call this eq2

A = 66 / - 6

A = - 11

anonymous · Answer 2 · 2013-04-23T21:45:50+0000

One number is 18 more than another number. The sum of the two numbers is 60. Find the numbers.

anonymous · Answer 3 · 2013-12-09T20:13:01+0000

what is the sum of 2 numbers that are 70 thier quotient is 13 what are the 2 numbers?

anonymous · Answer 4 · 2014-03-05T02:43:43+0000

The sum of two numbers is 42 if the second is 6 less than twice the first number, what are the numbers?

anonymous · Answer 5 · 2014-03-13T20:47:46+0000

What is the sum of two numbers if they are the same distance from zero

anonymous · Answer 6 · 2014-03-18T06:01:52+0000

the sum of two numbers is 40, one number is 4 times as large as the other number, what are the two numbers?