Math, asked by mahajanpaavani3030, 23 hours ago

Find the value of following expression, when x=-2 2x³+3x²-x+5​

Answers

Answered by masura8080
0

Following are the steps for getting the answer :

Given:

2x³+3x²-x+5

x=-2​

To find:

2x³+3x²-x+5=?

Solution:

we have to solve the given expresion ,

the value of x is given

put x=-2 in the given expression

=2×-2³+3×-2²-(-2)+5

the cube of -2 = -8

=2×-8+3×-2²-(-2)+5

the square of -2 is 4

=2×-8+3×4-(-2)+5

Now, we will use the BODMAS rule

B  Bracket

O of/order

D division

M  multiplication

A  addition

S subtraction

so,

=2×-8+3×4-(-2)+5

=2×-8+3×4+2+5

=-16+12+2+5

=-4+2+5

=-4+7

=3

Thus, the answer is 3.

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