Calculate: √5/2-√5+2/2+√5
2 answers:
So,
First, we have to simplify the expression.
We can see that there is a negative square root of 5 and a positive square root of 5. They cancel out. In addition, we know that two-halves are equal to 1.
Since the square root of 5 can be thought of as 5 to the one-half power, we should evaluate that first.
Substitute 2.236 for the square root of 5.
Multiply.
1.118 + 1
Add.
2.118
So the expression is approximately equal to 2.118 (exactly 2.1180339887498948482045868343656).
First, we have to simplify the expression.
We can see that there is a negative square root of 5 and a positive square root of 5. They cancel out. In addition, we know that two-halves are equal to 1.
Since the square root of 5 can be thought of as 5 to the one-half power, we should evaluate that first.
Substitute 2.236 for the square root of 5.
Multiply.
1.118 + 1
Add.
2.118
So the expression is approximately equal to 2.118 (exactly 2.1180339887498948482045868343656).
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Values of the composite function:
Step-by-step explanation:
Given two functions f(x) and g(x), their composite function is given by
Which means using the output value of g(x) as input for f(x).
Let's start by computing
First, we compute the value of f(-1), which is (from the graph)
f(-1) = 1
Now we use this value as input into g(x); we notice that at x = 1, the value of g(x) is 6, therefore:
Now we evaluate
First, we compute the value of f(0), which is (from the graph)
f(0) = 0
Now we use this value as input into g(x); at x = 0, the value of g(x) is 7, therefore:
Now we evaluate
First, we compute the value of g(-1), which is (from the graph)
g(-1) = 5
Now we use this value as input into f(x); at x = 5, the value of f(x) is 3, therefore:
Finally we evaluate
First, we compute the value of g(4), which is (from the graph)
g(4) = 4
Now we use this value as input into f(x); at x = 4, the value of f(x) is 2, therefore:
Learn more about composite functions:
#LearnwithBrainly
Answer:
x = - 4 ± 2
Step-by-step explanation:
Given
f(x) = x² + 8x + 4
To find the zeros let f(x) = 0, that is
x² + 8x + 4 = 0 ( subtract 4 from both sides )
x² + 8x = - 4
To solve using the method of completing the square
add ( half the coefficient of the x- term )² to both sides
x² + 2(4)x + 16 = - 4 + 16
(x + 4)² = 12 ( take the square root of both sides )
x + 4 = ± = ± 2
( subtract 4 from both sides )
x = - 4 ± 2
Thus the zeros are
x = - 4 - 2 and x = - 4 + 2
Answer:
3/2=1.5
Step-by-step explanation:
Based on the attached image
