Question

for what value of k. the equation
ax^2-kx+81 =0 has equal roots .
a)+- 24
b)+-32
c)+- 54
d)+- 46
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Answer 1

For equal and real roots

D = 0

D = B² - 4ac = 0

= (-K)² - 4 (A) + (81) = 0

= K² - 324 A = 0

= K² = 324 A

= K = √324 A

Answer 2

Answer:

b=+-54

Step-by-step explanation:

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