Wednesday

January 28, 2015

January 28, 2015

Posted by **anonymous** on Monday, July 11, 2011 at 9:32pm.

- Math -
**Henry**, Wednesday, July 13, 2011 at 3:57pmC(x) = x^2 - 40x + 405 = 0,

Use the Quadratic Formula:

x = ( 40 +- sqrt(400-1620)) / 2,

x = (40 +- sqrt(-20)) / 2,

x = (40 +- sqrt(20*-1)) / 2,

x = (40 +- 4.47i) / 2,

Solution Set:

x = 20 + 2.24i.

x = 20 - 2.24i.

- Math -
**Henry**, Wednesday, July 13, 2011 at 4:08pmCorrection:Replace 400 with 1600.

**Answer this Question**

**Related Questions**

Math - solve c(x)=x^2-40x+405 where x equals 15

HELP ME - Find two numbers whose difference is 42adn product s -405 Find two ...

Liberal Arts Math - factor the polynomial completely: 2xy-3y-40x+60 2xy-40x-3y+...

Math - Solve for 5 X 3 to the nth,. my answer is 15, 45, 135, 405

math - question is 40x^2 + 23x -30 = 0 reads as 40x squared plus 23x minus 30 ...

math - solve using set builder notation -8-11(3x+7)less than or equal to -40x-9

Math-Factoring 2 - Factor Completely 2x^3-40x^2-192x I have a common factor of x...

Tricky Math tho (Damon) - Divide. (25x^2 - 40x + 18) div. (5x - 3) need to know ...

Physics - A block oscillates on a spring and passes its equilibrium position ...

Math - graphing method to solve linear programming problem. z=8x+12y 40x+80y=560...