rachelcondon8860
31.12.2021 •
Mathematics
Which expression is equivalent to 9x – (x – 8)(x + 1) + 10x?
-x^2 + 19x + 8
-x^2 + 26x + 8
8x^2 +10x + 8
8x^2 +26x + 8
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Ответ:
-x^2 + 26x + 8
Step-by-step explanation:
9 x - (x - 8) (x + 1) + 10 x is always equal to -x^2 + 26 x + 8
Ответ:
option 2
Step-by-step explanation:
9x – (x – 8)(x + 1) + 10x
9x – (x² + x — 8x — 8) + 10x
9x – (x² — 7x — 8) + 10x
9x – x² + 7x + 8 + 10x
-x² + 26x + 8
Ответ: