[tex] {(y - 5)}^{2} = {y}^{2} - 10y + 25[/tex]
не равны:
[tex] {y}^{2} - 25 = (y - 5)(y + 5)[/tex]
[tex] {y}^{2} + 10y + 25 = {(y + 5)}^{2} [/tex]
[tex] {y}^{2} + 25[/tex]
Равны:
[tex] {y}^{2} - 10y + 25[/tex]
[tex]25 - 10y + {y}^{2} [/tex]
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[tex] {(y - 5)}^{2} = {y}^{2} - 10y + 25[/tex]
не равны:
[tex] {y}^{2} - 25 = (y - 5)(y + 5)[/tex]
[tex] {y}^{2} + 10y + 25 = {(y + 5)}^{2} [/tex]
[tex] {y}^{2} + 25[/tex]
Равны:
[tex] {y}^{2} - 10y + 25[/tex]
[tex]25 - 10y + {y}^{2} [/tex]