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a) x2-2x-13=0

We can solve this question by using quadratic formula.

Where a = 1

b = -2

c = -13

By putting values of a, b and c in the quadratic formula we obtain two values of x.

Taking 2 common from the above equation, we will get value of x (Chavanis, 2013).

Now

X = 1 - 1 and x = 1 + 1

So the solution set is { x = 1 - 1 , x = 1 + 1 }

b) 4x2-4x+3=0

We can solve this question by using quadratic formula.

Where a = 4

b = -4

c = 3

By putting values of a, ...