Решите уровнения (x+7)^2-(x-4)(x+4)=65

x^2 + 14x + 49 - ( x^2 - 16) = 65 x^2 + 14x + 49 - x^2 + 16 = 65 14x = 65 - 65 14x = 0 x = 0

[latex](x+7)^2-(x-4)(x+4)=65[/latex] [latex]x^2+14x+49-(x^2-16)-65=0[/latex] [latex]x^2-x^2+14x+49+16-65=0[/latex] [latex]14x=0[/latex] [latex]x=0[/latex].