Question

find the coefficient of x in the expansion of (x+2)³ with explanation​

Answer 1

Solution➜

☞Given: We have to expand (x+2)³.

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Formula used: (a+b)³=a³- 3a²b + 3ab² - b³

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Let's find

(x+2)³=x³-3x²2+3x2²-2²

=3 and 4 and 2 are Coefficients.

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Hence According to the question the Coefficients in the given number is 3,4 and 2

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More basic identities➜

☞(a+b)²=a²+2ab+b²

☞(a-b)²=a²-2ab+b²

☞(a+b+c)²=a²+b²+c²+2(ab+bc+ca)

Answer 2

Answer::

Coefficient is 4 , 3 and 2.