Quadratic Equations | Baamboozle - Baamboozle | The Most Fun Classroom Games!

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15

Find the value of k for which equation 4x^2 + 8x – k = 0 has real roots.

k is > = –4

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eraser

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shark

Other team loses 25 points!

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rocket

Go to first place!

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baam

Lose 25 points!

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15

Without solving, comment upon the nature of roots of each of the following equation: 6x^2– 13x + 4 = 0

Real and Unequal

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10

The equation 3x^2 – 12x + (n – 5) = 0 has equal roots. Find the value of n.

n = 17

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10

Find x: 2x^2 – 9x + 10 = 0, when : x belongs to W.

x = 2

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thief

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shark

Other team loses 25 points!

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gift

Win 5 points!

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thief

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15

Is x = 5 a solution of the equation x^2 – 2x – 15 = 0 ?

YES

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20

Solve : x=4±√11, give your answer to one decimal place.

∴x=4+3.317 or x=4-3.317 ∴x=7.317 or 0.683 ∴x=7.3 or 0.7

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20

One root of the quadratic equation 8x^2 + mx + 15 = 0 is 3/4 . Find the value of m.

m = -26

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15

Round off to two significant figures: x=3.618 or x=1.382

∴x = 3.6 or x= 1.4

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