4. Write the trinomial represented by each rectangle of algebra tiles. Then, determine the
dimensions of each rectangle

The trinomial represented by the algebraic tiles is x^2 + 4x + 3
On the horizontal axis, we have:
1 row under the big square.
This represents x + 1
On the vertical axis, we have:
3 columns beside the big square.
This represents x + 3
So, we have:
(x + 1) * (x + 3)
Expand
(x + 1) * (x + 3) = x^2 + x + 3x + 3
Evaluate
(x + 1) * (x + 3) = x^2 + 4x + 3
Hence, the trinomial represented by the algebraic tiles is x^2 + 4x + 3
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