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TheOneandOnly003
27.01.2020 •
Mathematics
i need to write an expression for the shaded region in its simplest form, showing all of my steps!
but it's late at night and i'm not entirely sure how to do this, so you so much in !
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Ответ:
x² + 23x + 49
Step-by-step explanation:
Area of the big rectangle
= (x + 10)(2x + 5)
= 2x² + 5x + 20x + 50
= 2x² + 25x + 50
Area of the small white rectangle
= (x + 1)(x + 1)
= x² + x + x + 1
= x² + 2x + 1
Area of the shaded area
= (2x² + 25x + 50) - (x² + 2x + 1)
= 2x² + 25x + 50 - x² - 2x - 1
= x² + 23x + 49
Ответ: