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Triss [41]
3 years ago
7

What is the axis of symmetry for the function f(x)=7−4x+x2?

Mathematics
1 answer:
Lady bird [3.3K]3 years ago
6 0

Answer:

x = 2

Step-by-step explanation:

y =  {x}^{2}  - 4x + 7 \\ y = (x - 2) {}^{2}   - 4 + 7 \\ y =  {(x - 2)}^{2}  + 3

Therefore, axis of symmetry is <u>x</u><u> </u><u>=</u><u> </u><u>2</u>

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Simplify 4+(9×2)÷(4-2)+1
kogti [31]

First we have to work out everything inside the parentheses (according to PEMDAS):

9 × 2 = 18

4 - 2 = 2

Now, we can rewrite the expression:

4 + 18 ÷ 2 + 1

According to PEMDAS, we should complete the division in the middle first:

18 ÷ 2 = 9

Now we can rewrite the expression again:

4 + 9 + 1

And now it's as simple as just adding the three numbers together:

4 + 9 + 1 = 14


Your final answer is 14. :)

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Can someone pls help me
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The midpoint is

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