Question

If -5 is a root of equation 2x^2+px-15=0 and the equation p(x^2+x)+k=0 has equal roots, find the value of k
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Answer 1

2*25+p(-5)-15=0
So p=7
D=0
49-7*4*k=0
K=49/28

Answer 2

Answer:

here's ur answer

50-5p-15=0

35-5p=0

35=5p

p=7

put in second equation

7(25-5)+k=0

175-35+k=0

k= -140

Hope it helps you

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