Question

Factorise: a² + 19a + 78 using middle term splitting method​

Answer 1

Step-by-step explanation:

a2+19a+17

20a2+17

20a2=-17

a2=-17-20

a2=-3

Answer 2

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a³ + 19a + 78

➠a³ + (13+6)a + 78

➠a³ + 13a + 6a +78

➠a(a+13) + 6(a+13)

➠(a + 13)(a + 6)

Hope it helps you mate ❤️