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29.01.2020 •
Mathematics
What is the factored form of the following expression?
x^2 - x - 42
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Ответ:
(x - 7)(x + 6)
Step-by-step explanation:
Consider the factors of the constant term ( - 42) which sum to give the coefficient of the x- term ( - 1)
The factors are - 7 and + 6, since
- 7 × 6 = - 42 and - 7 + 6 = - 1
x² - x - 42 = (x - 7)(x + 6)
Ответ:
3.875
or
3 7/8
Step-by-step explanation: