4b2-16bFactor 4b out of 4b2.4b(b)-16bFactor 4b out of -16b.4b(b)+4b(-4)Factor 4b out of 4b(b)+4b(-4).4b(b-4) Factor 4b^2-16b Solving MATH problems We can solve all math problems. Get help on the web or with our math app