Question

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Answer 1

Answer:

f(x) = kx²-7x + 12 = 0, one root is 3

to find the value of k

since 3 is a root of the equation, f(3) = 0

f(3) = k 3² - 7 * 3 + 12 = 0

=> 9k - 21 + 12 = 0

=> 9k - 9 = 0

=> 9k = 9

=> k = 1

Answer 2

$\huge\boxed{Answer}$

Given :-

3 is the one root of the equation -

f(x) = kx² - 7x + 12 = 0

So , f(3) = 0

k(3)² - 7(3) + 12 = 0

9k - 21 + 12 = 0

9k - 9 = 0

k - 1 = 0

k = 1