What are the zeroes of f(x) = x2 - 2x - 3?
Solution:
Given f(x) = x2 - 2x - 3
Zeros of a function means values of x for which makes f(x) = 0
Since, it is a quadratic equation, we use quadratic formula to find roots
x = -b ± √(b2 - 4ac) / 2a
Here, a = 1, b = -2, c = -3
x = -(-2) ± √((-2)2 -4(-3)) / 2(1)
x = 2 ± √(4 + 12) / 2
x = 2 ± √16 /2
x = 2 ± 4 /2
x = -2/2, 6/2
x = -1, 3
Therefore, the zeros of the given function are -1, 3.
What are the zeroes of f(x) = x2 - 2x - 3?
Summary:
The zeroes of f(x) = x2 - 2x - 3 are -1, 3.
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