Question

Ajutor la o proba de evaluare clasa 7:

1)Pentru care valori ale nederminatei X nu are sens raportul algebric:

c) \frac{5x-2}{2x-3}
d) \frac{7x}{x^2-25}


2)b)Aflati valoarea raportului algebric \frac{x^2-2}{3x+1} pentru:
a)X=2 b)X=√3


3)b)Amplificati cu X+3 raportul algebric: \frac{3x}{x-3}

4)Simplificati raportul algebric:
c) \frac{x^2-9}{x^2+3x}
d) \frac{x^2-16}{x^2-8x+16}

5)Efectuati:
e) \frac{x^2-9}{x^2+3x} + \frac{2x-3}{3-x}
f) \frac{2x+1}{2x-4} - \frac{2x-1}{3x-6}
g) \frac{9x^2-4}{x^2-1} * \frac{x+1}{6x-4}
h) \frac{x^2-x}{y^2-9} / \frac{9x^2-9}{x^2+6x+9}

6)Scrieti ca putere:
b)( \frac{9x^2+30x+25}{9x^2-25} )^6 *( \frac{3x^2+5x}{3x^2-5x} )^8 /[( \frac{3x-5}{3x+5} )^9]^2

Raspunsului corect ii dau coronita si 5 stele si primeste 68 de puncte

Answer 1

rezolvarea e atasata