What two numbers multiply to give you -64 and add up to 0

Answer 1

find all the factors of -64

1* -64 or -1* 64

2* -32 or -2* 32

4*-16 or -4*16

8*-8 or -8*8

1+ -64 or -1+ 64

2+ -32 or -2+ 32

4+-16 or -4+16

8+-8 or -8+8

Ans will be the pair that gets you zero

8+-8 or -8+8

Answer 2

Let the numbers be x and y.

Then, xy = -64 and x + y = 0.

Since x + y = 0, y = -x.

So, x(-x) = -64

x² = 64

x = 8 or -8

If x = 8, then y = -8

If x = -8, then y = 8

So, the numbers are 8 and -8.