Answers

2014-02-23T21:06:49+05:30
If -5 is a root of the quadratic equation 2x² + px - 15 = 0, hence we have

2(-5)² + p(-5) - 15 = 0

then p = 7

so the eq is 2x² + 7x - 15 = 0

its one root is -5 than other is (solving the eq) 3/2

P(x² + x) + k=0

=> 7(x² + x) + k=0
=>7
x²+x+k=0
=>7(-5)²+(-5)+k=0
=>175-5+k=0
=>k=-170







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