If α and Beta are the zeroes of the polynomial 2x − 5x + k and α − Beta = −1. Find the value of k.
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this is required solution
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shubhamtiwari31:
wrong
wrong but galte se brainliest par click ho gya
x square nahi hai 2x hai ek baar aur solve karo plz
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x2-5x+k
Here, a=1, b=-5 and c=k
Now, alpha+beta= -b/a= -(-5)/1= 5
alpha*beta= c/a= k/1= k
Now, apha-beta=1
Squaring both sides, we get,
(alpha-beta)2=12
=> (alpha+beta)2-4*aplha*beta=1
=> (5)2-4k=1
=> -4k= 1-25
=> -4k= -24
=> k=6
So the value of k is 6.
Hope it helps!!
Cheers!
Here, a=1, b=-5 and c=k
Now, alpha+beta= -b/a= -(-5)/1= 5
alpha*beta= c/a= k/1= k
Now, apha-beta=1
Squaring both sides, we get,
(alpha-beta)2=12
=> (alpha+beta)2-4*aplha*beta=1
=> (5)2-4k=1
=> -4k= 1-25
=> -4k= -24
=> k=6
So the value of k is 6.
Hope it helps!!
Cheers!
if it helped than plz my answer as brainliest
wrong
why
what's wrong
a=2
2 is wrong answer
ok q is wrong?
It is wrong as alpha - beta = -1
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