Question

i.
If x = is a root of the quadratic equation kx2 + 5x - 21 = 0, then complete the
following activity to find the value of k. One root of the quadratic equation is
ON
Substitute x = in the equation.
k + 5 - = 0
. + 15 - 21 = 0.
:9k + D - 84 = 0
..9k = k = 0​

Answer 1

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Answer 2

Answer:

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