Question

Do as directed:


1.) Check whether –2 and –4 are zeroes of the polynomial 2x + 9.

2.) Find a zero of the polynomial p(x) = 5x + 15.

3.) Find the value of k, if x – 1 is a factor of 7x3 + 11x 2 – 4x + k.​

Answer 1

Answer:

i know one answwer this is your one number

Step-by-step explanation:

Let us substitute x=−2 in the given polynomial f(x)=x  

4

−16 as shown below:

f(−2)=(−2)  

4

−16=16−16=0

Since f(−2)=0, therefore, −2 is the zero of the polynomial f(x)=x  

4

−16.

Now substitute x=2 as shown follows:

f(2)=(2)  

4

−16=16−16=0

Since f(2)=0, therefore, 2 is the zero of the polynomial f(x)=x  

4

−16.

Hence, −2 and 2 are the zeroes of the polynomial f(x)=x  

4

−16.