Question

Find the value of k, for which one root of the quadratic equations Kx^2-14x+8=0 is 2

Answer 1

The root of the equation is 2.

So 2 satisfies the value of x is the equation

Thus, put 2 as the value of x and you are done!

==> k x² - 14 x + 8 = 0

==> k * 2² - 14 * 2 + 8 =0

==> 4 k -28 + 8 =0

==> 4 k - 20 = 0

==> 4 k =20

==> k = 20 / 4

==> k = 5

Hence the value of k is 5

Hope I helped you

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