Răspuns:
a)[tex]a) x^{2} = 200 x 2 = 400\\b) x^{2} = 225 x 12 = 2700\\c) x^{2} = \frac{5}{18} ori \frac{2}{5} = 2/18 = 1/9\\d) x^{2} = 22,5/3,6 = 6.25\\e) x^{2} = 12.8 * 1.8 = 23.04\\f) x^{2} = 6 * 3/4 * 0.(3) <=> x^{2} = 18/4 * 0.(3)\\g) 2x^{2} = 25 * 72 <=> 2x^{2} = 1800 <=> x^{2} =900\\[/tex]
Explicație pas cu pas:
