X^2 + 4 (x-1) > or equal to x^2+12

X^2+4x-1>or equal tox^2+12

then the two x squared will cancel eachother which brings

4x-1>or equal to 12

the minus one goes to the other side then is added with 12

4x>or equal to 13

finally we divide both sides by four to get

x>or equal to 13/4