Factor out the greatest common factor. 28 x squared plus 8 x

4x(7x + 2)

Step-by-step explanation:

28x^2 + 8x =

= 2 * 2 * 7 * x * x + 2 * 2 * 2 * x

The common factors are shown above in bold. They are 2, 2, x.

2 * 2 * x = 4x. The greatest common factor is 4x. You factor 4x out of both terms.

= 4x(7x + 2)

< 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⭐

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