Question

verify that 4 is a zero of polynomial x^2-9x+20​

Answer 1

Step-by-step explanation:

here is your answer of your question

Answer 2

$\large {\textsf{\textbf{Question :}}}$

Verify whether 4 is a zero of polynomial x²-9x+20.

$\large {\textsf{\textbf{Solution :}}}$

We have to check whether 4 is the zero of x²-9x+20 or not.

So, we'll substitute x=4 in x²-9x+20 and solve :

$:\implies x^2-9x+20 = 0$

$:\implies (4)^2-9(4)+20=0$

$:\implies 16-36+20=0$

$:\implies 36-36=0$

$:\implies 0=0$

$\bf\underline {\therefore4 \: is \: a \: zero \: of \: the \: polynomial \: x^2-9x+20. }$