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9 September, 13:37

Rewrite the expression in factored form: x2-11x+30

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  1. 9 September, 14:05
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    (X-5) (X-6)

    First you look at the last number and find multiple of 30 that also add/subtract to get 11.

    In this case 5 and 6 both "add up" to 11 and multiply to get 30.

    BUT since you're looking for a negative 11 you can't add positive 5 and 6 so that is why you add together negative 5 and 6.

    And in multiplication rules two negatives make a positive.
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