Question

Which expression is not a perfect square trinominal

Answer 1

(C)

Explanation:

Simplify:

y² + 11y + 121

y + 11

y + 11

Note that, when combined, the factors must equal 11y. However, in this case, the factors when combine does not equal 11y, rather, 22y. Therefore, this answer choice is not a perfect square trinomial.

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