Show that x=2 is a solution of the equation x^3-x-6

x = 2 is the solution of x^3 - x - 6

Step-by-step explanation:

(x^3) - x - 6 = 0

If x = 2,

--> (2^3) - 2 - 6

= 8 - 2 - 6 = 8 - 8 = 0.

< coa = 150 ( given)

as ba and bc are tangents

so oc and oa is perpendicular to cb and ab respectively because in circle normal passes through centre

so in quadrilateral oabc

< coa + < oab + < ocb + < abc = 360

150 +90+90 + < abc = 360

330 + < abc = 360

< abc = 360 -330 = 30

so < abc = 30

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a c

step-by-step explanation: