Find the sum of (x + 3) and (- x - 4). before 2 43 and I will give vote for you to be brainlist

-1

Step-by-step explanation:

(x+3)+(-x+-4)

3+-4= -1

X squared = -1

< 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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step-by-step explanation:

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