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Which of the following constants can be added to x^2 + 2/3x to form a perfect square trinomial?

A)1/9
B)4/9
C)4 and 1/9

User Jun Han
by
7.6k points

1 Answer

2 votes
Hello.

A trinomial is a perfect square if the square root of the first term times the square root of the third term times 2 equals the middle term.


\boxed{\mathsf{x^(2) + (2)/(3) x}}

a) Adding 1/9:


image

b) Adding 4/9:


image

c) Adding 4 and 1/9:


image

Hope I helped.
User WebStylePress
by
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