Thursday

November 27, 2014

November 27, 2014

Posted by **carolyn** on Monday, January 3, 2011 at 9:10pm.

a. The quadratic formula

b. Completing the square

Write a paragraph or two comparing and contrasting the two methods. Explain which method you prefer and why.

c) Use the accompanying graph to estimate the time at

which the workers are most efficient.

d) Use the accompanying graph to estimate the

maximum number of components assembled per

hour during an 8-hour shift.

- algebra -
**Reiny**, Monday, January 3, 2011 at 9:26pmformula:

x = (-8 ± √72)/2

= (-8 ± 6√2)/2 = -4 ± 3√2

completing the square

x^2 + 8x = 2

x^2 + 8x +**16**= 2 +**16**

(x+4)^2 = 18

x+4 = ± √18 = ±3√2

x = -4 ± 3√2

notice that completing the square gives you the reduced answer.

(If the equation starts with 1x^2 and the x term is even, I always use completing the square instead of the formula)

**Answer this Question**

**Related Questions**

Algebra - I was given this answers to a problems I solved but I do not ...

Algebra - I was given this answers to a problems I solved but I do not ...

Algebra - Which of the following statements is true? A. Any quadratic equation ...

Algebra Quadratic Equations - I am trying to define the different appraoches to ...

Algebra II - 1)What method(s) would you choose to solve the equation: x2 + 2x - ...

Pre Algebra - Please help me with some problems. Thank you! Solve the equation ...

Math ,help - how can i simplify this more its for the following problem: Problem...

math,help,algebra I - I need help can someone help me get unstuck and let me ...

Algebra - Which is the easiest way to figure a quadratic equation; graphing, ...

math - 1. solve by using the quadratic formula. 5x^2+x=3 2. solve by completing ...