Решите неравенство.Срочно 2у^2+9у+9≤ 0. х^2+7х-60

balet2001 @balet2001

July 2022 1 10 Report

Решите неравенство.Срочно
2у^2+9у+9≤ 0.
х^2+7х-60<0.

Answers & Comments

sirca 1) (2y+3)(y+3)=<0
y1=-3/2 y2=-3

+ - +
--------(-3)----------(-3/2)----------
x∈[-3,-3/2]

2) (x+12)(x-5)<0
x1=-12 x2=5

+ - +
-----------(-12)----------(5)--------

x∈(-12,5)

2 votes Thanks 5

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