3 years ago

True or false, x =4 is a critical point to this inequality

Mathematics

1 answer:

snow_tiger [21]3 years ago

6 0

Answer:

true

Step-by-step explanation:

x²-4/x²+9x+20 >=0

cross multiplying the equation we have,

(x²-4/x²+9x+20)*x²+9x+20 >= 0*x²+9x+20

= x²-4>=0

x²>=4

taking the square root of both sides, we have:

√x²>= √4

x >=2

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