Question

sa se efectueze (1,2x²y+0,5y²)²

Answer 1

$(1,2x^{2} y+ 0,5y^{2} ) ^{2} =(1,2 x^{2} y) ^{2} +2* 1,2x^{2} y * 0,5y^{2} + (0,5 y^{2}) ^{2}=1,44x^{4 } y ^{2} + 1,2 x^{2} y^{3} + 0.25 y^{4}$