Sunday

January 25, 2015

January 25, 2015

Posted by **BERNIE** on Saturday, August 18, 2012 at 9:36am.

- algebra2 -
**Reiny**, Saturday, August 18, 2012 at 9:54amx^2 + 18x = -4

take half of the 18, square it, then add to both sides

x^2 + 18x**+ 81**=-4**+ 81**

(x+9)^2 = 77

x+9 = ±√77

x = -9 ± √77

**Answer this Question**

**Related Questions**

math/limits - lim (squar(14+y)-squar(14))/y y->0 Find limit if there is one.

Math - Solve by completing the square x^2-18x=10 Could you please explain this ...

math - when I have (2x^(3)-18x)-(2x^(3)) / (x^(2)-9) am I suppose to be left ...

Calculus - Taylor - could you please help me with solving this problem? #1) Find...

Algebra 2 - Solve by completing the square. a² - 2√(3a) + 2 = 0 Solve for ...

math - is these answers correct? solve the equation: 2x^2 +8x - 17=(x +2)^2= x=-...

Algebra - checking problem Use FOIL to multiply: (6x – 1)(3x – 4) 6x*3x + 6x*(-4...

Maths - A cuboid has total surface area of 40 meter squar and its lateral ...

math! - determine two geometreic sequences whose first terms are 18x-9, 2x+8 and...

Algebra - Solve the system 9x-5y=119 18x-10y=238 Double both sides of the first ...