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Rødder 3 (b = 0 eller c = 0)
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Expression 12: "y" equals "a" "x" squared plus "b" "x" Has graph. To audio trace, press ALT+T.
y
=
a
x
2
+
b
x
12
Expression 13: "a" "x" squared plus "b" "x" equals 0 Has graph. To audio trace, press ALT+T.
a
x
2
+
b
x
=
0
13
Expression 14: "a" "x" squared equals negative "b" "x"
a
x
2
=
−
b
x
14
Hvis x = 0:
Hvis x = 0:
15
Expression 16: "x" Subscript, 3 , Baseline equals StartAbsoluteValue, 0 , EndAbsoluteValue equals 0
x
3
=
0
equals
=
0
0
16
Hvis x ≠ 0:
Hvis x ≠ 0:
17
Expression 18: "a" "x" equals negative "b"
a
x
=
−
b
18
Expression 19: "x" Subscript, 4 , Baseline equals StartFraction, negative "b" Over "a" , EndFraction equals 25
x
4
=
−
b
a
equals
=
25
2
5
19
Skæringspunkter
Skæringspunkter
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20
25
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x₁ = -10
x₂ = 10
x₃ = 0
x₄ = 25
"x"
x
"y"
y
"a" squared
a
2
"a" Superscript, "b" , Baseline
a
b
7
7
8
8
9
9
over
÷
functions
(
(
)
)
less than
<
greater than
>
4
4
5
5
6
6
times
×
| "a" |
|
a
|
,
,
less than or equal to
≤
greater than or equal to
≥
1
1
2
2
3
3
negative
−
A B C
StartRoot, , EndRoot
pi
π
0
0
.
.
equals
=
positive
+
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