Question

Calcule : 1,2 ao quadrado

Answer 1

$(1,2)^{2}=\left(\dfrac{12}{10}\right)^{2}\\\\\\(1,2)^{2}=\dfrac{12^{2}}{10^{2}}\\\\\\(1,2)^{2}=\dfrac{144}{100}\\\\\\\boxed{\boxed{(1,2)^{2}=1,44}}$

Answer 2

eh simples:
1,2 x 1,2 = 1.44