Question

value of k for which the roots of the quadratic equation K - 4 x square + 2 k - 4 x + 2 is equal to zero are equal​

Answer 1

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Answer 2

a= k-4

b= 2k-4

c= 2

b2-4ac=0

(2k-4)^2 -4×(k-4) ×2=0

4k^2-16k+16 -(4k+16)2 =0

4k^2-16k +16-8k + 32=0

4k^2-24k+48=0 (÷ whole eq by 4)

k^2-6k+12=0

k^2-6k=-12

k(k-6) =-12

k=-12 or k-6=0

k=6