Question

find two factors whose product is-8 and the sum is 2​

Answer 1

Answer:

I) -2,4

Pls tell the second one .....sry

Answer 2

Answer:

4 and -2

Step-by-step explanation:

Let the no. be x and y

given xy=-8

x=-8/y........(1)

and x+y=2........(2)

Substituting value of x from (1) in (2)

-8/y + y=2

-8+y^2/y =2

-8+y^2=2y

-8+y^2-2y=0

y^2-2y-8=0

y^2-(4-2)y-8=0

y^2-4y+2y-8=0

y(y-4)+2(y-4)=0

(y+2)(y-4)

y=-2

OR

y=4...(3)

From (1) and (3)

x=-8/y

=-8/4

=-2

Two numbers are 4 and -2.

Hope its help full

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