upravte zadané rovnice do základního tvaru ax2 + bx + c = 0
poté rozložte trojčlen na součin a určete kořeny
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základní tvar |
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|
x2 – 8x – 9 = 0 |
x2 – 25 = 0 |
x2 – 2x – 3 = 0 |
x2 + 14x + 49 =
0 |
|
x2 – 8x – 20 =
0 |
x2 – 2x – 24 =
0 |
x2 + x – 2 = 0 |
x2 – 4x – 21 =
0 |
|
x2 – 9x + 18 =
0 |
x2 + 13x + 42 =
0 |
x2 – 11x + 28 = 0 |
x2 – 9x – 22 =
0 |
|
x2 – 6x – 40 =
0 |
x2 + 2x – 15 =
0 |
x2 – x – 30 = 0 |
x2 – 8x + 7 = 0 |
|
x2 + 15x + 36 =
0 |
x2 + x – 56 = 0 |
x2 – 7x – 18 =
0 |
x2 + x – 72 = 0 |
|
x2 – 6x + 9 = 0 |
x2 + 7x – 8 = 0 |
x2 + 4x + 4 = 0 |
x2 – 10x – 39 =
0 |