Question

if minus1 is a zero of the polynomial p(x)=School squared minusx square +x+4 find the value of a​

Answer 1

x=1 then 1+1+4=6 mark as brainliest

Answer 2

Answer:

Answer:

The value of a is 6

Step-by-step explanation:

\text{Given that }\frac{-1}{2}\text{ is a zero of the polynomial }P(x)=8x^3-ax^2-x+2

we have to find the value of a

P(x)=8x^3-ax^2-x+2

\text{As }\frac{-1}{2}\text{ is the zero therefore by remainder theorem}

P(\frac{-1}{2})=0

8(\frac{-1}{2})^3-a(\frac{-1}{2})^2-(\frac{-1}{2})+2=0

-1-\frac{a}{4}+\frac{1}{2}+2=0

\frac{a}{4}=1+\frac{1}{2}

\frac{a}{4}=\frac{3}{2}

a=\frac{3}{2}\times 4=6

Hence, the value of a is 6