Answered

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What is the coefficient of the second term of the trinomial? (3x 3)2=9x2 Bx 9 Enter your answer in the box. B =.

Sagot :

ghanami

Answer:

B= 18x

Step-by-step explanation:

use identity :  (a+b)² = a²+2ab+b²   you have a =3x  and b =3 so: B =2ab

the second term of this trinomial is : 2ab  means : 2(3x)(3) = 18x

(3x +3)2=9x2+2(3x)(3)+3²

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