Solve by completing the square. 4x^2 + 8x– 3=0

x = -1 + , x = -1 -

Step-by-step explanation:

4 + 8x - 3 = 0

First, add 3 to both sides:

4 + 8x = 3

Next, divide both sides by 4:

+ 2x =

Now, add the correct number by dividing 2 by 2 and squaring it and add it to both sides:

+ 2x + 1 =

Then, factor the left side:

=

Next, take the square root of both sides:

x + 1 = ±

Solve for x:

x = -1 + , x = -1 -

the answer is 844

step-by-step explanation:

it is 844 because if you add 836.50 + 7.5 you will get 844

the diameter is 16 cm. are you a teacher?

step-by-step explanation: