Question

16,37^2-2*16,37*7,77+7,77^2/4,3*2,79+4,3*5,81

Answer 1

$frac{16,37 ^{2}-2*16,37*7,77+ 7,77^{2} }{4,3*2,79+4,3*5,81} = frac{(16,37-7,77) ^{2} }{4,3*(2,79+5.81)} = frac{ 8,6^{2} }{4,3*8,6} = frac{8,6}{4,3} =2$