Răspuns:
a)4x(x-1)
b)
[tex]2 \sqrt{3} [/tex]
c)
[tex] \frac{9}{2} [/tex]
Explicație pas cu pas:
a)
[tex]4{x}^{2} - 4x = 4x(x - 1)[/tex]
b)
[tex]h = \frac{ l\sqrt{3} }{2 } = \frac{4 \sqrt{3} }{2} = 2 \sqrt{3} [/tex]
c)
[tex] \frac{ \frac{ \sqrt{3} }{2 } }{ \frac{ \sqrt{3} }{3} } + \frac{ \sqrt{3} }{ \frac{ \sqrt{3} }{3} } = \frac{ \frac{3 \sqrt{3} }{2} }{ \frac{ \sqrt{3} }{3} } = \frac{3 \sqrt{3} }{2} \times \frac{3}{ \sqrt{3} } = \frac{9}{2} [/tex]
