vliu470
28.10.2019 •
Mathematics
What is the expression in factored form? 16x2 - 25
a. (4x - 5)
b. (-4x 5)(4x - 5)
c. (4x - 5)2
d. (4x 5)(4x - 5)
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Ответ:
(4x - 5)(4x + 5)
Ответ:
- 7
Step-by-step explanation:
21 = - 4x - 7
- 4x - 7 = 21
- 4x = 21 + 7
- 4x = 28
x = 28 / - 4
x = - 7