the coefficient of x in the expansion of (x+6)^2 is
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Answer:
12
Step-by-step explanation:
by expansion we get x²+12x+36
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(x+6)^2
Using identity,
(a+b)^2 = a^2 + 2ab + b^2
(x)^2 + 2*x*6 + (6)^2
= x^2 + _12x_ + 36
Coefficient of x is 12
Using identity,
(a+b)^2 = a^2 + 2ab + b^2
(x)^2 + 2*x*6 + (6)^2
= x^2 + _12x_ + 36
Coefficient of x is 12
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