Question

Find the Zero of a polynomial of R(x)=x²-x-2

Answer 1

Answer:

$x {}^{2} - x - 2 = 0 \\ x {}^{2} - 2 x + x - 2 = 0 \\ x (x - 2) + 1(x - 2) = 0 \\ (x + 1)(x - 2) = 0 \\ \\ x = - 1 \\ x = 2$

Step-by-step explanation:

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Answer 2

R (x) = x^2 - x - 2

R (0) = (0^2) - 0 - 2

= 0 - 0 - 2

= -2