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ivann1987 [24]
3 years ago
11

(x+3)(x−2)/(x+7)^2 ≥0

Mathematics
1 answer:
LiRa [457]3 years ago
6 0

Answer:

(x+3)(x−2)/(x+7)^2 ≥0 when  x ≤ -3 or x  ≥ 2.

Step-by-step explanation:

(x+3)(x−2)/(x+7)^2 ≥0

The critical values are (x + 3)(x - 2) = 0.

That is when x = -3 and x = 2.

Set up a table:

            x < - 3     x = -3    -3 < x < 2   x = 2   x > 2

x + 3        -ve           0               +ve       0         +ve

x - 2         -Ve         -ve              -ve       0          +ve

(x+7)^2       +ve       +ve             +ve        +ve       +ve

Whole

function    + ve        0                - ve        0          +ve

So the function is ≥ 0  when x ≤ -3 and x  ≥ 2.

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