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Factorise a² + 3a - 28
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22 votes
Factorise a² + 3a - 28

User Salomonderossi
by
3.3k points

1 Answer

4 votes

Answer:

(a+7)(a-3)

Explanation:

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

28

1 x 28

2 x 14

7 x 4

7-4=3

(a+7)(a-3)

User Makwana Prahlad
by
3.7k points
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