Factorise a² + 3a - 28 - QAmmunity.org

Wizebin asked Apr 4, 2023

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25 votes

Factorise a² + 3a - 28

Wizebin asked Apr 4, 2023

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18 votes

Answer:

(a+7)(a-3)

Explanation:

Find the factors of 28 that would also add up to 3

1 x 28

2 x 14

7 x 4

7-4=3

(a+7)(a-3)

Jack Bracken answered Apr 11, 2023

2.8k points

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