Solve x^2-4x+10=0 by completing the square.

No real solutions.

Step-by-step explanation:

Let's solve your equation step-by-step.

x^2 − 4x + 10 = 0

Step 1: Subtract 10 from both sides.

x^2 − 4x + 10 − 10 = 0 − 10

x^2 − 4x = − 10

Step 2: The coefficient of -4x is -4. Let b=-4.

Then we need to add (b/2)^2=4 to both sides to complete the square.

Add 4 to both sides.

x^2− 4x + 4 = −10 + 4

x^2− 4x + 4 = −6

Step 3: Factor left side.

(x−2)^ 2 = −6

Step 4: Take the square root.

x − 2 = ± √−6

Step 5: Add 2 to both sides.

x − 2 + 2 = 2 ± √−6

x = 2 ± √−6

So Therefore The Answer Is:

No real solutions.

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step-by-step explanation:

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correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,