Question

5. Factorise the following:
a) 2a2 + 5a - 12 tell me fast​

Answer 1

2a2+5a-12

2a2+8a - 3a-12

2a(a+4)-3(a+4)

(2a-3)(a+4)

Hope it helps u..... ☺️☺️✌️✌️

Answer 2

It is a quadratic equation,

2a²+5a-12

we will equate it to Zero

and solve it for a.

In quadratic equation we get two real values

In this question,

a=3/2 or 4

Hope you will find it useful.