Answer:
d) 25x²-20x+4
Step-by-step explanation:
a) x²-2x+4
roots are not equal
b) 3x²-6x+1
roots are not equal.
c) 4x²-16x+9
roots are equal
1)
[tex]x {}^{2} - 2x + 4 = 4[/tex]
2)
[tex]3x {}^{2} - 6x + 1 = 1[/tex]
3)
[tex]4x {}^{2} - 16x + 9 = 9[/tex]
4)
[tex]25x {}^{2} - 20x + 4 = 4[/tex]
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Verified answer
Answer:
d) 25x²-20x+4
Step-by-step explanation:
For only touching x-axis, both roots must be equal.
a) x²-2x+4
roots are not equal
b) 3x²-6x+1
roots are not equal.
c) 4x²-16x+9
roots are not equal.
d) 25x²-20x+4
roots are equal
Answer:
1)
[tex]x {}^{2} - 2x + 4 = 4[/tex]
2)
[tex]3x {}^{2} - 6x + 1 = 1[/tex]
3)
[tex]4x {}^{2} - 16x + 9 = 9[/tex]
4)
[tex]25x {}^{2} - 20x + 4 = 4[/tex]