Q2. If P(x) = x3 -2x2 +3x -5 find the value of P(-1)
Answers
Step-by-step explanation:
this question's answer is -11
Solution:-
:- Given equation
=> x³ - 2x² + 3x - 5
To find the value of p(-1)
=> p(x)=0
So
=> p(-1) = 0
Now put the value p = -1 on given equation
=> x³ - 2x² + 3x - 5
=> p(-1) = (-1)³ - 2 × ( - 1)² + 3 ×-1 - 5
=> p(-1) = - 1 - 2 × 1 - 3 - 5
=> p(-1) = - 1 - 2 - 3 - 5
=> p(-1) = -3 -3- 5
=> p(-1) = -6 - 5
=> p(-1) = -11
:- So value of p(-1) is -11
A linear equation looks like any other equation. It is made up of two expressions set equal to each other. A linear equation is special because:
It has one or two variables.
No variable in a linear equation is raised to a power greater than 1 or used as the denominator of a fraction.
When you find pairs of values that make the linear equation true and plot those pairs on a coordinate grid, all of the points for any one equation lie on the same line. Linear equations graph as straight lines.