Factorising Quadratic Equations (Where a=1)

This lesson covers:

  1. How to factorise quadratics where the coefficient of the x2 term is 1
  2. E.g. 'Factorise x2 - 3x + 2'

Factorise the quadratic x2 + 10x + 16

(x+2)(x+8)|(x+8)(x+2)

0

/

1

Factorise the quadratic x2 + 2x - 15

(x-3)(x+5)|(x+5)(x-3)

0

/

1

Factorise the following quadratic:

x2−4x−45
(x+5)(x-9)|(x-9)(x+5)

0

/

1

Factorise the following quadratic:

x2−7x+12
(x-3)(x-4)|(x-4)(x-3)

0

/

1

Factorise the following quadratic:

x2−3x−18
(x+3)(x-6)|(x-6)(x+3)

0

/

1

Factorise the following quadratic:

x2+6x+8
(x+2)(x+4)|(x+4)(x+2)

0

/

1

Factorise the following quadratic:

x2−x−56
(x+7)(x-8)|(x-8)(x+7)

0

/

1

Factorise the following quadratic:

x2+9x+20
(x+4)(x+5)|(x+5)(x+4)

0

/

1

Factorise the following quadratic:

x2−12x+35
(x-5)(x-7)|(x-7)(x-5)

0

/

1

Factorise the following quadratic:

x2−x−72
(x+8)(x-9)|(x-9)(x+8)

0

/

1