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Answer:
The area is x² + 13x + 36.
Explanation:
Area of a parallelogram: A = bh
where b is the base and
h is the height perpendicular to the base
A = (x+4)(x+9)
Use FOIL Method
A = x² + 9x + 4x + 36
A = x² + 13x + 36
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