Q: What is the discriminant of 2x2 plus 5x plus 28 equals 0?

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The discriminant is -439 and so there are no real solutions.

It has no real roots.

It works out that the centre of the circle is at (-0.5, 1.5) and its diameter is the square root of 28

For x = -4 2x2 + x = 2 (-4)2 + (-4) = 32 - 4 = 28

22+22+28+28=100.

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The discriminant is -439 and so there are no real solutions.

It has no real roots.

It works out that the centre of the circle is at (-0.5, 1.5) and its diameter is the square root of 28

For x = -4 2x2 + x = 2 (-4)2 + (-4) = 32 - 4 = 28

22+22+28+28=100.

it equals 28

it is 28

3x + 7 = -4x + 28 implies 7x + 7 = 28

59

That equals 28

25 + 28 + 29 = 82

58