Multiply.(x^4 + 1)(3x^2 + 9x + 2)

  (x4 + 1) • (3x2 + 9x + 2)

Step-by-step explanation: Factoring  3x2+9x+2

The first term is,  3x2  its coefficient is  3 .

The middle term is,  +9x  its coefficient is  9 .

The last term, "the constant", is  +2

Step-1 : Multiply the coefficient of the first term by the constant   3 • 2 = 6

Step-2 : Find two factors of  6  whose sum equals the coefficient of the middle term, which is   9 .

     -6    +    -1    =    -7

     -3    +    -2    =    -5

     -2    +    -3    =    -5

     -1    +    -6    =    -7

     1    +    6    =    7

     2    +    3    =    5

     3    +    2    =    5

     6    +    1    =    7

Hope this helped, plz mark brainest and have a good day :)

< 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⭐