The function is given by the formula f(x)=2x^{2}-5x+3 a) find f(-1).b) at what values x, f(x)=1? c)Does the point A(1;0) belong to the graph of the function

Jamar Hays 2022-09-14 Answered
The function is given by the formula f ( x ) = 2 x 2 5 x + 3
a) find f(-1).
b) at what values x, f(x)=1?
c)Does the point A(1;0) belong to the graph of the function
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Answers (2)

Illuddybopylu
Answered 2022-09-15 Author has 17 answers
a ) f ( 1 ) = 2 ( 1 ) 2 5 ( 1 ) + 3 = 2 + 5 + 3 = 10
b ) 2 x 2 5 x + 3 = 1 2 x 2 5 x + 2 = 0
D = 5 2 4 2 2 = 25 16 = 9
x1=5+3/4=8/4=2
x2=5-3/4=2/4=0.5.
c ) 2 1 2 5 1 + 3 = 0
2-5+3=0
-3+3=0
0=0
This point belongs to the graph.
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mercuross8
Answered 2022-09-16 Author has 16 answers
F ( x ) = 2 x 2 5 x + 3
1 ) F ( 1 ) = 2 ( 1 ) 2 5 ( 1 ) + 3 = 2 + 5 + 3 = 10
2)F(x)=1 find x
2 x 2 5 x + 3 = 1
2 x 2 5 x + 2 = 0
x 2 2.5 x + 1 = 0
x1+x2=2.5
x1*x2=1
x1=0.5
x2=2
3)A(1.0)
x=1
2 1 2 5 1 + 3 = 0
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