Foolish Factoring practice for factoring

What multiplies to 36 but adds to -13?

• 4, 9

• -4, -9

• 12, 3

• 12, -3

• -2, -18

What multiplies to -6 but adds to -1 ?

• 1, 6

• -1, 6

• 1, -6

• 2, -3

• -2, 3

What multiplies to -18 but adds to -7?

• -2, 9

• 2, -9

• 6, -3

• -6, 3

• -18, 1

What multiplies to -20 but adds to -1 ? (Answer with an "and" like 4 and 5)

What multiplies to 12 but adds to -8?

• 3,4

• 2,6

• -2, -6

• -3, 4

• -2, 6

What multiplies to -15 but adds to -14?

• 1, -15

• -1, 15

• 3, 5

• -3, 5

• 3, -5

What multiplies to -45 but adds to -4?

• 5, 9

• -5, -9

• -9, 5

• 45, -1

• -45, 1

What multiplies to -12 but adds to -1?

• 3,4

• -3,4

• 3,-4

• 2,-6

• -2,6

What multiplies to 10 but adds to -7?

• 2,5

• -2,-5

• 1,-10

• -1,10

• -2, 5

What multiplies to -16 but adds to -15 ?

• 1, 16

• -1, 16

• 1,-16

• 4,-4

• -4,-4