cam1976
09.04.2021 •
Mathematics
Write the formula for the math term in the sequence. 1/2, 3/5, 5/10, 7/17, 9/26... (n starts with 1)
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Ответ:
A = 2x² + x - 45
Step-by-step explanation:
The area (A) of a rectangle is calculated as
A = length × breadth , thus
A = (2x - 9)(x + 5) ← expand using FOIL
= 2x² + 10x - 9x - 45 ← collect like terms
= 2x² + x - 45