Răspuns: [tex]\red{\bf ~a = 1~}[/tex]
Explicație pas cu pas:
[tex]\bf a = \bigg(\dfrac{1}{2} \bigg)^{2}-0,25+1[/tex]
[tex]\bf a =\dfrac{1^{2}}{2^{2}} -\dfrac{~25^{(25}~ }{100} +1[/tex]
[tex]\bf a =\dfrac{1}{4} -\dfrac{1 }{4} +1[/tex]
[tex]\red{\boxed{\bf ~a = 1~}}[/tex]
