Question

а2 - За – 40 factorise​

Answer 1

Step-by-step explanation:

a2 – 3a – 40

= a2 – 8a + 5a – 40

= a (a – 8) + 5 (a – 8)

= (a – 8) (a + 5)

hope this helps you......

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Answer 2

a2-3a-40

=a2-8a+5a-40

=a(a-8)+5(a-8)

=(a-8)(a+5)