# Math

posted by .

n^2 - 2n + 1 = 5

• Math -

(n-1)^2 = 5
n-1 = ±√5
n = 1±√5

• Math -

n^2 - 2 n - 4 = 0

n = [ 2 +/- sqrt(4 + 16) ] / 2

n = [ 2 +/- 2 sqrt 5 ]/2

n = 1 +/- sqrt 5

## Similar Questions

1. ### math,correction

Find the area of the rectangle shown in the figure. length = radical (3) + radical (5) width = radical (3) + radical (5) My answer: a= 8 + 2 radical (15) or a = 15.75 agree, you seem to be able to do these should i leave it as the …
2. ### math,correction

Find length x in each triangle. Express your answer in simplified radical form. leg 1 = 8 leg 2 = x hypotenuse = 12 MY answer: so x = ã80 I got √80 or appr. 8.94 yes the symbol is a radical. also since the directions say to …
3. ### Math HELP!! FAST!!

Can someone help me solve this and write the answer in simplified radical form?
4. ### college math 209

write in simplified radical form by rationalizing the denominator 2ã5 + 3/ã5 - 1
5. ### Geometry

1.If two different lines are perpendicular to the same plane, they are: a. Collinear b. Coplanar c. Congruent d. Consecutive I think the answer is B, is that correct?
6. ### math

(w+9)^3+56=0 write were w i a real number write answer in simplified radical form write b^2/3 as a radical expression
7. ### Alg 1

Simplifying Radicals A gardener is mowing a 20-yd-by-40 yd rectangular pasture using a diagonal pattern. He mows from one corner of the pasture to the cxorner diagonally opposite. What is the length of this pass with the mower?
8. ### MAth 109

The formula d= square root of 3h/2 models the distance, d, in miles, that a person h feet high can see to the horizon. If the pool deck on a cruise ship is 80' above the water, how far can passengers on the pool deck see?
9. ### math

Can someone please check ny answers and tell me if I'm correct?
10. ### Math

A car fits onto a golden rectangle with a length of 12 ft. What is the cars width?

More Similar Questions