Question

the numer of zero of polynomial x²-2x-8
​

Answer 1

Answer:

Good morning my dear friend have a nice day

Answer 2

$\sf \mapsto{x}^{2} - 2x - 8 \\ \sf\mapsto{x}^{2} - 4x + 2x - 8 \\\sf\mapsto x(x - 4) + 2(x - 4) \\\sf\mapsto (x - 4)(x + 2)$

Now,

$\text{Zeroes of polynomial}\leadsto \\\overbrace{\leadsto x - 4 = 0 } \\ \bf\underbrace{ \leadsto\: x = 4 \: } \\ \overbrace{\leadsto \: x + 2 = 0 \: } \\ \bf \underbrace{ \leadsto\: x = - 2 \: }$