Question

If one root of the quadratic equation x²-11x+k=0 is 9, then find the value of k.
1.10
2.18
3.-18
4 -10
WILL MARK AS BRAINLY​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

Given quadratic equation is x^2−11x+k=0

One root is 9

Putting x=9 in the given equation,

x^2−11x+k=0

⇒(9)^2−11(9)+k=0

⇒81−99+k=0

⇒−18+k=0

∴k=18