Question

Repedeeeeeee vă rog !!!

Answer 1

Răspuns:

Explicație pas cu pas:

1)$(\sqrt{3}-1)^2 +\frac{4}{\sqrt{12} }+(0,08-0,9):0,3=3-2\sqrt{3}+1+\frac{4\sqrt{12} }{12}  +\\ +(\frac{8}{100}-\frac{9}{10})*\frac{10}{3}   =4-2\sqrt{3}+\frac{2\sqrt{3} }{3}   -\frac{82}{100}*\frac{10}{3}=\frac{120-60\sqrt{3}+20\sqrt{3}-82  }{30} =\\   =\frac{38-40\sqrt{3} }{30}$

2)x²+7=10

  x²=3

x₁=-√3 ;x₂=√3

3)d=16 cm; atunci x²+x²=16;2x²=16;x²=8

  A=x²=8 cm²

4)f(x)=-2x+3

  f(-10)=20+3=23