Question

draw the graph of quadratic polynomial p(x)=x²-x-2 and write the solution​

Answer 1

Step-by-step explanation:

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Answer 2

Given : quadratic polynomial p(x) = x²-x-2  

To Find : draw the graph  and solution

Solution:

p(x) =  x²-x-2

x²-x-2 = (x - 2)(x+  1)  Hence 2 and - 1 are zeroes.

p'(x) = 2x - 1

=> x = 1/2  = 0.5 is the vertex.

x          p(x)

-3        10

-2        4

-1         0          (zero)

0          -2

0.5       =2.25   ( Vertex)

1           -2

2          0             (zero)

3          4

4          10

-1 and 2 are zeroes

Plot the points and draw smooth curved line passing through points

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