Question

спростити вираз: (2a-b)2+2ab=a2+b2

Answer 1

(2a-b)²+2ab=a²+b²;

4a²-4ab+b²+2ab=a²+b²;

4a²-2ab=0;

2a(2a-b)=0;

a=0;

a=b/2.