Question

find the value of k if x+5 is a factor of the following 2x³+kx²-11x-30​

Answer 1

Answer:

Step-by-step explanation:

since we know x+5 is the factor of p(x)=2x³+kx²-11x-30​

lets find the zero of g(x)=x+5

                                 g(x)=x+5=0

                                 g(x)=x= -5

now, that we have the zero of g(x) lets put the value in p(x)

p(x)=2x³+kx²-11x-30​

p(-5)=2(-5)³+k(-5)-11(-5)-30

=2(-125)-5k+55-30

=-240-5k+25

=265-5k

now lets solve the above answer to find k

265-5k=0

265=5k

265/5=k

53=k

k=53

hope it helps!!  :)

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Answer 2

Answer:

arey bhai sorry. mat bolo we can be make friends