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Сократите дробь:
b^2/b^2+bc
2a+4/a^2-4
x^2-y^2/x^2-xy
Сократите дробь:
b^2/b^2+bc
2a+4/a^2-4
x^2-y^2/x^2-xy
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Answers & Comments
2)2a+4/a^2-4=2(a+2)/(a+2)(a-2)=2/a-2
3)x^2-y^2/x^2-xy=(x-y)(x+y)/x(x-y)=x+y/x