Răspuns:
Explicație pas cu pas:
[tex]g) 2x^2=\frac{25}{2}=>x^2=25=>x=+-\sqrt{25}=>x=+-5\\h) 2x^2=24*3=>x^2=\frac{72}{2}=>x^2= 36=>x=+-\sqrt{36} =>x=+-6 \\i) 87x^2=15*58=>x^2=\frac{1305}{87}=>x=+-\sqrt{15} \\j) 9x^2=25*4=>x^2=\frac{100}{9}=>x=+-\sqrt{\frac{100}{9} } =>x=+-\frac{10}{3} \\k) x^2=4*9=>x^2=36=>x=+-\sqrt{36} =>x=+-6\\l) 12x^2=5\sqrt{5} *3\sqrt{5} =>12x^2=75=>x^2=\frac{75}{12}=>x=+-\sqrt{\frac{75}{12} } =>x=+-\frac{5\sqrt{3} }{2\sqrt{3} } =>x=+-\frac{5}{2}[/tex]
