Question

factorise x²-9x-220

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Answer 1

x² - 9x - 220

x² + 11x - 20x - 220

x ( x + 11 ) - 20 ( x + 11 )

( x + 11 ) ( x - 20 )

Answer 2

Step-by-step explanation:

x²-9x-220

x²+11x-20x-220

x(x+11) -20(x+11)

(x-20)(x+11)

solution

(x-20) (x+11)