Factor:

x2 + 9x - 36

x = - 12

or

x=3

Step-by-step explanation:

in order to factorise the equation x² + 9x - 36

it will be expressed like this to make it a complete equation by subtracting 36 from both sides

x² + 9x - 36=0

the next step is to look for two numbers that when multiplied will give us - 36 and when added together it will give us 9.

the numbers would be - 3 and 12

so we have

x²-3x + 12x - 36 = 0

x (x-3) + 12 (x-3) = 0

(x+12) (x-3) = 0

we have,

x + 12 = 0

x = - 12

or

x-3 = 0

x = 3

Therefore, the factors for x are - 12 or 3.

11x-36

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