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Q: What is 4 x squared - 4x plus 1 equals 0?

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True because in both equations x = 0 or x = -4

(2x + 1)(2x + 1) or (2x + 1)2 so x = -0.5

B squared -4ac is the discriminant. you get 0, which means it will have one rational solution.

Using the discriminant for a quadratic equation the value of k works out as plus or minus 12.

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It is: 3x2+6x-11 = 0

16x2 + 8x + 1 = 0 : This factorises to (4x + 1)(4x + 1) = 0 When 4x + 1 = 0 then 4x = -1 : x = -1/4.

x^2+4x+7

No.

x2-10 = 4x+11 x2-4x-10-11 = 0 x2-4x-21 = 0 (x+3)(x-7) = 0 x = -3 and x = 7

0

4(x + 1) = 0.

4x-y+7=0

Then the straight line equation is: y = -4x+6

x2+y2-4x-6y-3 = 0 Using the appropriate formula it works out as:- Centre of circle: (2, 3) Radius of circle: 4.

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4x+7=9x+7 -5x=0 x=0

63828

If: y = x^2 -2x +4 and y = 2x^2 -4x +4 Then: 2x^2 -4x +4 = x^2 -2x +4 Transposing terms: x^2 -2x = 0 Factorizing: (x-2)(x+0) => x = 2 or x = 0 Therefore by substitution points of intersect are at: (2, 4) and (0, 4)

(2,1)

(6, 0) and (0, 8)

s^2 +4x -21 = 0 is a quadratic equation and by using the quadratic equation formula its solutions are s = 3 or s = -7

8 + y = 4x8 + y - 4x = 4x - 4x 8 + y - 4x = 0 8 - 4x + y = 0

It is a quadratic equation.