F(x) = x2 + 5x + 12
g(x) = -x + 11
find: go f(x)

- x² - 5x - 1

Step-by-step explanation:

To evaluate (g ￮ f)(x) substitute x = f(x) into g(x), that is

g(x² + 5x + 12)

= - (x² + 5x + 12) + 11 ← distribute parenthesis

= - x² - 5x - 12 + 11

= - x² - 5x - 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

⭐dhruv⭐

hello! just here for points! though i wish i knew!