Question

ex 10 vrg mult!!!!!!!​

Answer 1

Pozitiv- mai mare sau egal cu 0

Negativ- mai mic decat 0

a)

Formam o inecuatie:

-1,5x+4,5≥0

Il izolam pe x:

4,5≥1,5x

x≤3

x∈(-∞,3]

b)

$\frac{2x}{3} -\frac{4}{9} < 0$

Aducem la acelasi numitor comun 9

6x-4<0

6x<4

$x < \frac{4}{6} \\\\x < \frac{2}{3} \\\\x\in(-\infty,\frac{2}{3} )$

c)

$\sqrt{10} x+10\geq 0\\\\\sqrt{10} x\geq -10\\\\x\geq -\frac{10}{\sqrt{10} } \\\\x\geq -\frac{10\sqrt{10} }{10} \\\\x\geq -\sqrt{10} \\\\x\in[-\sqrt{10} ,+\infty)$

Un alt exercitiu gasesti aici: https://brainly.ro/tema/9158411

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