помогите срочно кто что может
4*(a-c)^2(a+b)^2/((a+b)^2*(a-c)^2)=4
((x+y)(x-y)*y(x+y))/(2y^2*(x-y)^2)=(x-y)/2y
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4*(a-c)^2(a+b)^2/((a+b)^2*(a-c)^2)=4
((x+y)(x-y)*y(x+y))/(2y^2*(x-y)^2)=(x-y)/2y