Answer:
"Perfect square trinomials" are quadratics which are the results of squaring binomials. (Remember that "trinomial" means "three-term polynomial".)
For instance:
(x + 3)2
= (x + 3)(x + 3)
= x2 + 6x + 9
...so x2 + 6x + 9 is a perfect square trinomial.
The correct answer is: [A]: "the number line in the upper, left-hand corner" .
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I believe the answer would be
7.4 - 5g + 4k
Can’t see the model.......................