Given A-B = 2, then the value of a2-b2-4b is______ .
If a + B = 2, the value of a & # 178; - B & # 178; + 4b is?
What
Bracket a minus 2B plus 3C times bracket a minus 3C minus 2B equals?
The square of bracket minus 3MN minus the square of 2m multiplied by the square of bracket 3MN multiplied by one-half bracket divided by the square of bracket minus 3