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04-03-2022
Mathematics

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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 =.

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ghanami ghanami

04-03-2022

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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