Ответ:
1. x² - 6x + 8 = 0
x1 = 4
x2 = 2
2. x²- 2x - 15 = 0
x1 = -3
x2= 5
3. x² - 15x + 36 = 0
x1= 12
x2 = 3
4. z² + 5z + 6 = 0
z1 = -3
z2 = -2
5. y² + 7y - 8 = 0
y1 = -8
y2 = 1
6. y² - 10y - 39 = 0
y1 = 13
y2 = -3
1) а) 2;4 б) -6;1
2) а) -3;5 б) -8;1
3) а) 12;3 б) 13;-3
Объяснение:
1) а) x1 + x2 = 6
x1×x2 = 8
б) x1 + x2 = -5
x1×x2 = 6
2) а) x1 + x2 = 2
x1×x2 = -15
б) x1 + x2 = -7
3) а) x1 + x2 = 15
x1×x2 = 36
б) x1 + x2 = 10
x1×x2 = -39
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Verified answer
Ответ:
1. x² - 6x + 8 = 0
x1 = 4
x2 = 2
2. x²- 2x - 15 = 0
x1 = -3
x2= 5
3. x² - 15x + 36 = 0
x1= 12
x2 = 3
4. z² + 5z + 6 = 0
z1 = -3
z2 = -2
5. y² + 7y - 8 = 0
y1 = -8
y2 = 1
6. y² - 10y - 39 = 0
y1 = 13
y2 = -3
Ответ:
1) а) 2;4 б) -6;1
2) а) -3;5 б) -8;1
3) а) 12;3 б) 13;-3
Объяснение:
1) а) x1 + x2 = 6
x1×x2 = 8
б) x1 + x2 = -5
x1×x2 = 6
2) а) x1 + x2 = 2
x1×x2 = -15
б) x1 + x2 = -7
x1×x2 = 8
3) а) x1 + x2 = 15
x1×x2 = 36
б) x1 + x2 = 10
x1×x2 = -39