Ответ №1
((x+3)(x+3) +(x-3)(x-3)) /(x-3)(x+3)=10/3
3×(x² +6x +9 +x² -6x +9) =10×(x-3)(x+3)
3(2x² +18) =10(x² -9)
6x² +54 -10x² +90 =0
-4x² +144 =0
-4x² = -144
x² =36
x =+-6
Ответ №1
((x+3)(x+3) +(x-3)(x-3)) /(x-3)(x+3)=10/3
3×(x² +6x +9 +x² -6x +9) =10×(x-3)(x+3)
3(2x² +18) =10(x² -9)
6x² +54 -10x² +90 =0
-4x² +144 =0
-4x² = -144
x² =36
x =+-6
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