Ответ:
х2 - 8х + 15 =0
х2 - 11х + 18 = 0
х2-5х - 6 = 0
х2-4х + 4 = 0
3х² + 4х + 20 =0
5х² - 3х - 2 = 0
20x^3+16x
x(20x^2+16)
x=0
20x^2+16
x^2=16-20
x=-4
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Ответ:
х2 - 8х + 15 =0
х2 - 11х + 18 = 0
х2-5х - 6 = 0
х2-4х + 4 = 0
3х² + 4х + 20 =0
5х² - 3х - 2 = 0
Ответ:
20x^3+16x
x(20x^2+16)
x=0
20x^2+16
x^2=16-20
x=-4