Question

1. For what value of 'k'(k²-4)
x²+2x-9 can not be quadratic equation ?
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Answer 1

Answer:

k(k²-4)x²+2x-9=0

k²-4=0

k²=4

k=±2 OK friend this is urs answer

it is quadratic equations because the highest order is 2

u can also solve by formula method

Answer 2

Answer:

-2 or +2

Step-by-step explanation:

as 'a' cannot be equal to 0 then the value of K should be 2 as to make it zero when subtracting from 4.

k^2-4

2^2-4

4-4=0

So the value of k is -2 or +2.