Question

2x^2+5x-18..... I want to verify my answer is x(2x+5)-18 what s your answer .. factorise it ​

Answer 1

Your Answer..

Given :

Expression is 2x^2 + 5x - 18

Required to Solve

1. Factorise 2x^2+5x-18

Solution :

To solve this type of questions you need to know about the various methods of factorisation.

Here in this question we have to multiply the first term constant i.e. 2 with the last constant i.e. 18

So , we get 36 and now we have to split the middle term in such that their sum should be equal to middle term and product must be equal to third term.

In this way we have to factorise this equation or Expression.

Here is the solution

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

Therefore,

After the factorisation of 2x^2 + 5x - 18

The result is ( 2x+9) (x - 2)

Conclusion :

Thus , your answer was incorrect .

But don't get disappointed try solving these type of sums some more.