Question

Factorise- a²-7a-30​

Answer 1

Answer:

a²-(10-3)a-30

a²-10a+3a-30

a(a-10)+3(a-10)

(a-10) (a+3)

a=10. a=-3

Answer 2

Answer:

okay pls wait...............

Step-by-step explanation:

a² – 7a – 30

(a×a) + (-10 +3)a + (-10×3)

So,

(a-10) (a+3)

Therefore the factosised form of a²-7a-30 is (a-10) (a+3)