Simplify.(4a2b)(-2a3b4c2)
Simple,just simplify your problem....\(4a^{2} * -2a^{3} = -8a^{5} (remember "multiplying" exponents adds them)\)\(b* b^{4} = b^{5}\)which just leaves you \(c^{2}\) itself...now add them up....Making your answer... \(-8a^{5} b^{5} c^{2}\)