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3 years ago

[3](b)Calculate the values of c for which 2x2 – 3x + c>-2 for all values of x.

Mathematics

1 answer:

hoa [83]3 years ago

3 0

Answer:

c > -7/8

Step-by-step explanation:

Add 2 for an inequality that compares to zero:

2x^2 -3x +(c+2) > 0

This will be true when the discriminant is negative. For the quadratic ...

ax^2 +bx +c

the discriminant is ...

b^ -4ac

We want this to be negative:

(-3)^2 -4(2)(c+2) < 0

9 -8(c +2) < 0

9 -8c -16 < 0

-7 < 8c

-7/8 < c

The given inequality will be true for all values of c greater than -7/8.

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Answer:

Step-by-step explanation:

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3 years ago

Help meh with an explication

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Answer:

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Step-by-step explanation:

Given

$\frac{6}{\sqrt 2}$

Required

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Answer:

Step-by-step explanation:

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3 years ago

[3](b)Calculate the values of c for which 2x2 – 3x + c>-2 for all values of x.​

[3](b)Calculate the values of c for which 2x2 – 3x + c>-2 for all values of x.