*If one root of equation 4x²-2x+k-4=0 is reciprocal of other. The value of k is ……………*
1️⃣ -8
2️⃣ 8
3️⃣ -4
4️⃣ 4
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*If one root of equation 4x²-2x+k-4=0 is reciprocal of other. The value of k is ……………*
1️⃣ -8
2️⃣ 8
3️⃣ -4
4️⃣ 4
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Answer:
The answer is 8,by using one (alpha) and another one 1/(alpha)
Then applying the formula for sum -b/a and for multiplication c/a