Question

Find the value of the
of the following
Expressions, when x= -1

1) 2x²-x-2

Answer 1

Answer:

=> 1

Step-by-step explanation:

Given that:-

$2x$²$-x-2$

The value of x is given as -1.

To find:- The value of the expression,

As we have,

=> $2x$²$-x-2$

Now, plug the value of x as -1 in the given equation:

=> $2(-1)^{2} -(-1)-2$

By simplifying it further, we get

=> 2 - ( -1 ) - 2

=> 2 + 1 - 2

=> 3 - 2

=> 1

Hence, the required solution is 1.

Answer 2

As per the given data in the question

In above question it is given that

We have find the value of given expression

Given $X=-1$  then equation is $2X^{2} -X-2$

Now we have putting the value will be $X=-1$ in equation

$\Rightarrow 2X^{2} -X-2\\\Rightarrow 2(-1)^{2} -(-1)-2\\\Rightarrow 2-1(-1)-2\\\Rightarrow 2+1-2\\\Rightarrow 3-2\\=1$

Hence the required value will be $1$