Math, asked by chawlahitesh29, 5 months ago

if -5 is a root of 2x² + Px-15=0 & The equation p(xsquare+x)+k,=0
how equal not
then find K.

Answers

Answered by legendsword17

Answer:

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Answered by vashwinikruthi

Answer:

Here is the answer to your question.

The given quadratic equation is 2x² + px –15=0

x = –5 is given to be the root of this equation

- 2(-5)²+p(-5)-15=0

=50 -5p-15=0

35-5p=0

p=35÷5=7

putting p=7,we get the quadric equation7 7(x²+x)+k=0 has equal

I.e.. 7x²+7x+k=0 , has equal roots

D=b^2-4ac=0

=(7)²-4 ×7×k=0

28k =49

k= 49÷28

= 7/4

Thus the value of k= 7/4

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if -5 is a root of 2x² + Px-15=0 & The equation p(xsquare+x)+k,=0how equal notthen find K.​

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if -5 is a root of 2x² + Px-15=0 & The equation p(xsquare+x)+k,=0
how equal not
then find K.