Solve the equation x210x−x10x=2(10x)
x210x−x10x=2(10x)10x(x2−x)=2(10x)Factor out 10x\cancel10x(x2−x)\cancel10x=2(\cancel10x)\cancel10xDivide both sides by 10xx2−x=2Subtract 2x2−x−2=0Factor using trial and error (x−2)(x+1)=0
Solve for x
x−2=0x+1=0x=2andx=−1
No comments:
Post a Comment