Question

2x2+5x-18=0 solve by factorisation method​

Answer 1

Answer:

2.8

Step-by-step explanation:

4+5x-18=0

5x=18-4

x=14/5

x=2.8

Answer 2

Answer:

By factorization method:-

$2x {}^{2} +5x - 18 = 0 \\ = > 2x {}^{2} - 4x + 9x - 18x = 0 \\ = > 2x(x - 2) + 9(x - 2) = 0 \\ = > (2x + 9)(x - 2) = 0$

Now:-

$2x + 9 = 0 \\ = > 2x = - 9 \\ = > x = \frac{ - 9}{2}$

And:-

$x - 2 = 0 \\ = > x = 2$

So,

$x = \frac{ - 9}{2} \: and \: 2$

Hope it helped ✌️✌️