Question

The polynomial p(x)=kx^3+15x^2+9x-40 when divided by(x+4) leaves a remainder-28 find the value of k​

Answer 1

SEE THIS:

we know that (x+4) is a factor,

so x=-4 as we know x+4=0

so further we put value of x

p(x)= k(-4)^3+15(-4)^2+9(-4)-40=0

k x -64 + 15 x 16  -36 -40 = 0

k x 100= 0

k= 100

Answer 2

Answer:

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