(4x+1)2=5y(x+4)2=5y помагите

[latex] \left \{ {{16 x^{2} +8x+1=5y} \atop { x^{2} +8x+16=5y}} \right. [/latex] вычитаем [latex]15 x^{2} -15=0[/latex] [latex]15 x^{2} =15[/latex] [latex] x^{2} =1[/latex] [latex]x_1=1[/latex] [latex]x_2=-1[/latex] 1.[latex] \left \{ {{x1=1} \atop {16* 1^{2}+8*1+1=5y}} \right. [/latex] [latex] \left \{ {{x_1=1} \atop {25=5y}} \right. [/latex] [latex] \left \{ {{x_1=1} \atop {y_1=5}} \right. [/latex] 2.[latex] \left \{ {{x_2=-1} \atop {16*(-1)^2+8*(-1)+1=5y}} \right. [/latex] [latex] \left \{ {{x_2=-1} \atop {9=5y}} \right. [/latex] [latex] \left \{ {{x_2=-1} \atop {y_2=1,8}} \right. [/latex]