Ответ:
1.б)
0=[tex]x^{2}[/tex]-4
[tex]x^{2}[/tex]=0+4
[tex]x^{2}[/tex]=4
2.в)
х+7=0
х=0-7
3.а)
6-х=0
-х= 0-6
4.г)
[tex]\frac{5}{x}[/tex]+10=0
[tex]\frac{5}{x}[/tex]=0-10
[tex]\frac{5}{x}[/tex]= -10
Объяснение:
ответ д-лишний
1) Б
[tex]y = {x}^{2} - 4 \\ {x}^{2} - 4 = 0 \\ (x - 2)(x + 2) = 0 \\ x_{1} =2 \\ x_{2} = - 2[/tex]
2) В
[tex]y = x + 7 \\ x + 7 = 0 \\x = - 7[/tex]
3) А
[tex]y = 6 - x \\ 6 - x = 0 \\ x = 6[/tex]
4) Г
[tex] y = 20x + 10 \\ 20x + 10 = 0 \\ 20x = - 10 \\ x = - 10 \div 20 \\ x = - 0.5[/tex]
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Answers & Comments
Ответ:
1.б)
0=[tex]x^{2}[/tex]-4
[tex]x^{2}[/tex]=0+4
[tex]x^{2}[/tex]=4
2.в)
х+7=0
х=0-7
3.а)
6-х=0
-х= 0-6
4.г)
[tex]\frac{5}{x}[/tex]+10=0
[tex]\frac{5}{x}[/tex]=0-10
[tex]\frac{5}{x}[/tex]= -10
Объяснение:
ответ д-лишний
Verified answer
1) Б
[tex]y = {x}^{2} - 4 \\ {x}^{2} - 4 = 0 \\ (x - 2)(x + 2) = 0 \\ x_{1} =2 \\ x_{2} = - 2[/tex]
2) В
[tex]y = x + 7 \\ x + 7 = 0 \\x = - 7[/tex]
3) А
[tex]y = 6 - x \\ 6 - x = 0 \\ x = 6[/tex]
4) Г
[tex] y = 20x + 10 \\ 20x + 10 = 0 \\ 20x = - 10 \\ x = - 10 \div 20 \\ x = - 0.5[/tex]