Нули функции это значения аргумента, при которых функция равна нулю
1) Г
2) Б
3) Д
4) А
[tex]y = {x }^{2} - 25 \\ {x }^{2} - 25 = 0 \\ ( x - 5)(x + 5) = 0 \\ x = 5 \\ x = - 5[/tex]
[tex]y = 4x + 16 \\ 4x + 16 = 0 \\ 4x = - 16 \\ x = - 16 \div 4 \\ x = - 4[/tex]
[tex]y = 8 - x \\ 8 - x = 0 \\ x = 8[/tex]
[tex]y = \frac{2}{x} + 10 \\ \frac{2}{x} + 10 = 0 \\ \frac{2}{x} = - 10 \\ x = \frac{2}{ - 10} \\ x = - 0.2[/tex]
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Нули функции это значения аргумента, при которых функция равна нулю
1) Г
2) Б
3) Д
4) А
[tex]y = {x }^{2} - 25 \\ {x }^{2} - 25 = 0 \\ ( x - 5)(x + 5) = 0 \\ x = 5 \\ x = - 5[/tex]
[tex]y = 4x + 16 \\ 4x + 16 = 0 \\ 4x = - 16 \\ x = - 16 \div 4 \\ x = - 4[/tex]
[tex]y = 8 - x \\ 8 - x = 0 \\ x = 8[/tex]
[tex]y = \frac{2}{x} + 10 \\ \frac{2}{x} + 10 = 0 \\ \frac{2}{x} = - 10 \\ x = \frac{2}{ - 10} \\ x = - 0.2[/tex]