12 x 212= 2544
x = 3
12
x >/= 12
x=12
x=12
Factor. X^2 + 12X X(X + 12) = 0 X = 0 ------------- X + 12 = 0 X = - 12 --------------
1/6=x/12 12=6x 2=x
Multiply -10 times 12 = -120
X-Play - 2003 2012-12-04 was released on: USA: 4 December 2012
There are several ways to solve x2-x-12. The easiest way, if you have a graphing calculator, is to put y = x2-x-12 and y = 0 into the graph and then solve for the intercepts. A way to do it without a graphing calculator is by factoring. x2-x-12 factors into (x-4) and (x+3). Then set (x-4) and (x+3) each equal to zero and solve. (x-4)=0 becomes x=4. (x+3)=0 becomes -3. Therefore, the answers are -3 and 4.
x = 12