The sum of two numbers is -7 and their product is -120 what the numbers?
Answers
Answered by
5
Answer:
If sum is -7 and product is -120 then
they are -8 and 15
Step-by-step explanation:
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Answered by
3
Answer :-
Let one number be x
another number be y
x + y = -7. ..(1)
xy = -120. ..(2)
by eq (2)
y = -120/x
Putting the value of y in eq (1)
x -120/x = -7
x² - 120 / x = -7
x² + 7x - 120 = 0
x² + 15x - 8x - 120 = 0
x (x + 15) - 8( x + 15) = 0
(x + 15) (x - 8) = 0
x = -15, 8
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