Introduction to Factorising Quadratic Trinomials

Find two integers that multiply to give the first number and add to give the second number...

18, 11

• 9, 2

• -9, -2

• -9, 2

• 9, -2

Find two integers that multiply to give the first number and add to give the second number...

20, 12

• -10, -2

• -10, 2

• 10, 2

• 10, -2

Find two integers that multiply to give the first number and add to give the second number...

-15, 2

• 5, 3

• 5, -3

• -5, -3

• -5, 3

Find two integers that multiply to give the first number and add to give the second number...

-12, 1

• -4, 3

• 4, 3

• -4, -3

• 4, -3

Find two integers that multiply to give the first number and add to give the second number...

-24, -5

• 8, 3

• -8, 3

• 8, -3

• -8, -3

Find two integers that multiply to give the first number and add to give the second number...

-30, -7

• -10, -3

• 10, 3

• -10, 3

• 10, -3

Find two integers that multiply to give the first number and add to give the second number...

10, -7

• -2, -5

• -2, 5

• 2, -5

• 2, 5

Find two integers that multiply to give the first number and add to give the second number...

36, -15

• 12, -3

• 12, 3

• -12, -3

• -12, 3