jenna3490
05.01.2021 •
Mathematics
Factor the following quadratic function:
-
y = 7x2
- 48x - 7
How do I do it
Solved
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Ответ:
(7x + 1)(x - 7).
Step-by-step explanation:
y = 7x^2 - 48x - 7
Use the 'ac' method:
7 * 7 = 49
Now we need 2 numbers whose product is 49 and whose sum is the 'middle' number -48.
They are -49 and 1,
Now we write the function as:
7x^2 - 49x + 1x - 7
= 7x((x - 7) + 1(x - 7) (x - 7) is common so we have
(7x + 1)(x - 7).
Ответ:
10/10 = 1
There is no decimal form unless you do 1.0, 1.00, 1.000, and so on.