Conner5459
22.05.2020 •
Mathematics
What is the simplest form of this expression?
(x − 3)(x2 + 4x + 5)
A.
x3 + 7x2 + 7x + 15
B.
x3 + x2 + 17x + 15
C.
x3 + x2 − 7x – 15
D.
x3 − 7x2 − 17x − 15
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Ответ:
c) x³ + x² - 7x - 15
Step-by-step explanation:
(x − 3)(x² + 4x + 5)
= x³ + 4x² + 5x - 3x² - 12x -15
= x³ + x² - 7x - 15
Ответ:
so its 3,3, and 3? so put in 9 that should be it