Which of the following is a rational zero of the function p(x)= 4x^4 + 8x^3 -7x^2 -21x-9 a. -3/2 b. -1 c. -3/4 and !

Applying the rational  roots theorem because of the -9 and 4,  -3/2 looks like a good bet  because -3 is a factor of -9 and 2 is a factor of 4.

Plugging x = -3/2 into the function we have

4(-3/2)^4 + 8(-3/2)^3 - 7(-3/2)^2 - 21(-1.5) - 9 = 0

so -3/2  is a zero

x = 1 and x =  -3/4  are not zeroes.

-3/2

Step-by-step explanation:

Just took test on odyssey

add an image

step-by-step explanation:

$4

step-by-step explanation:

$30×5=$150

$150 minus $130=$20

$20÷5=$4.

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