Question

if one root of quadratic equation x²-7x+k=2 find the value of k​

Answer 1

Here it goes ⬇️

Equation - x2-7x+k

One zero - 2

Solution-

x= 2 { putting in equation}

2²-7(3)+k= 0

4-21+k = 0

-17+k = 0

k= 17

see ⬆️

follow me ✌️

Answer 2

Step-by-step explanation:

Since 4 is the root of the given quadratic equation.

∴ It satisfies the given equation

∴ We can put x = 4 in the given quadratic equation

x2 – 7x + k =0 [Given}

∴ 42 – 7(4) + k = 0

∴ 16 – 28 + k = 0

∴ - 12 + k = 0

k = 12

Answer: The value of k is 12