Question

factorise: - (a-3)^2-(a+3) (a-3)

Answer 1

Answer:

refer picture of the given

Answer 2

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$(a - 3)² - (a + 3)(a - 3) \\ = (9² - 69 + 9) - 9² - 3² \\ = 9² - 6a + 9 - 9² - 9 \\ = - 69$