If x= -4 is a root of the equation x2 + kx - 4 = 0 and the quadratic equation x2 + px + k =0 has equal roots, find the values of p and k.
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Simplify brackets (x+y) cube (x-y)cube
syedzeeshan899p4k4je:
can you briefly explain?
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Answer:
k = 3, p = 2 root 3
Step-by-step explanation:
x2 + kx - 4 = 0
=> p(-4) = 0
=> 16 - 4k - 4 = 0 => 4k = 12=> k = 3
=> x2 + px + 3 = 0
p2 - 12 = 0
=> p = root12 = 2 root 3
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