SOLUTION: i have difficulty in this question..help me!
find the quadratic polynomial whose graph goes through the points (-1,0), (0,1) and (2,21).
and the answr should be f(x)= __x^2+__x+_
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-> SOLUTION: i have difficulty in this question..help me!
find the quadratic polynomial whose graph goes through the points (-1,0), (0,1) and (2,21).
and the answr should be f(x)= __x^2+__x+_
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Question 338743: i have difficulty in this question..help me!
find the quadratic polynomial whose graph goes through the points (-1,0), (0,1) and (2,21).
and the answr should be f(x)= __x^2+__x+__ Answer by Fombitz(32388) (Show Source):
You can put this solution on YOUR website! The general quadratic equation is
Substitute your three points to get three equations in a,b, and c.
(-1,0):
1.
.
.
.
(0,1):
2.
.
.
.
(2,21):
3.
Substitute eq. 2 into eq.1 and eq. 3,
4.
.
.
.
5.
Add eq. 4 and eq. 5,
Then from eq. 4,
.
.
.
