Question

HELP FOR 13 point bsbshshs

Answer 1

-20 is -10 × 2

-1 is -0.5 + -0.5

Answer 2

-5 and 4

Explanation:

Use a system of equations. Let
`x` be the first number and
`y` be the second number

The first equation will be a product,
`xy=-20`, and the second will be a sum,
`x+y=-1`

Solve the second equation for
`x`, which results in
`x=-1-y`, and substitute into the first equation.

`(-1-y)y=-20`

Distribute

`-y-y^(2) =-20`

Set equal to zero

`y^(2)+y-20=0`

Factor

`(y+5)(y-4)=0`

So
`y=-5` or
`y=4`

When
`y=-5`, then
`x=-1-(-5)` or
`x=4`

When
`y=4`, then
`x=-1-4` or
`x=-5`