Friday

December 19, 2014

December 19, 2014

Posted by **Anonymousab** on Saturday, June 15, 2013 at 11:09pm.

(x-9)^2=81

- math -
**Reiny**, Sunday, June 16, 2013 at 8:09amThe way it sits, both sides are a perfect square, so yo simply take the square root of both sides.

(x-9) = ± 9

x = 9 ± 9

x = 0 or x = 18

or

you could expand it ....

x^2 - 18x + 81 = 81

x^2 - 18x = 0

x(x - 18) = 0

x = 0 or x = 18

**Answer this Question**

**Related Questions**

math ergent please please... - 10.a)Solve the inequality x^3-5x^2+2x+8<0 by i...

Math- Algebra II - SOLVE.. Please show the steps so I'll understand it 8^x-2=(1/...

physics - two point charges are 10.0 cm apart and have chargeso of 2.0 uC (micro...

college algebra - please solve by method of substitution 0.3x-0.4y-0.33=0 0.1x...

algebra - Solve the following equation: k2 + 4k = 0 By factoring and By using ...

College Math II - Solve each problem. Find the quotient and remainder when x^2...

math calculus - Hi could someone please explain to me how i would use the chain ...

Math - 3x-4 to y+15 is constant and y=3 when x=2 then when y=12, x equals? My ...

Algebra 2 - Solve the system by elimination: -2x + 2y + 3z = 0 -2x - y + z =-3 ...

Algebra again - I don't understand how to do this problems: Solve for the ...