Question

Whoever can do this question will be marked as brainliest and this is negative number

Mrs. Forster thinks of 2 numbers.
the product of these two numbers is -28.

what COULD the two numbers possibly be?
list the possibilities.

The same two numbers have a sum of 3.
What MUST the two numbers be?

Answer 1

Answer:

x+y=3

x=3-y -equn 1

xy=-28

x=-28/y -equn 2

Equating both equations we get :

3-y=-28/y

3y-y square +28=0

y square -3y-28=0

y square -7y+4y-28=0

(y+4)=0 or (y-7)=0

y= -4 or 7.

Step-by-step explanation:

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Answer 2

let the two numbers by x and y respectively

according to the question,

xy=-28. -(1)

and

x+y=3. -(2)

x=3-y

putting value of x in eqn. 1

(3-y)y = -28

3y-y^2=-28

or,

y^2-3y+28=0

y^2-7y+4y+28=0

y(y-7)+4(y-7)=0

(y+4)(y-7)=0

y=-4 or 7

when y =-4

x=3-(-4)

x=7

when y=7

x=3-7

x=-4

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