Решите неравенства: 7x-11≥10x-8 x²-5x-36<0 |x+2|>3 3x²-2x+1<0

Question

Решите неравенства:
7x-11≥10x-8
x²-5x-36<0<br> |x+2|>3
3x²-2x+1<0<br>

Answer 1

X^2-5x-36<0<br>D=13
Х1<(5+13)/2=9<br>Х2<(5-13)/2=-4

Comments

3)х+2>3

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Х=1

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Х+2>-3

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Х>-5

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4 сам по принципу 2.))))))