Question

. If one root of the quadratic equation
x2 - 7x + k=0 is 2, find the value of k.​

Answer 1

Answer:

k=10

Step-by-step explanation:

Let x be 2

(2)²-7(2)+k=0

4-14+k=0

-10+k=0

k=0+10

k=10

Answer 2

Answer:

If one root is 2,

Then putting in place of x we get,

(2)²-7 x 2 + k = 0

4-7 x 2+ k = 0

4 - 14 = -k

-10 = -k

So, 10 = k

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Step-by-step explanation: