Find the value of following expression, when x=-2 2x³+3x²-x+5
Answers
Answered by
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.
Similar questions