Which expression is equivalent to16x2+81? 1. (4x−9i)2 2. (4x+9i)(2x+3i)(2x−3i) 3. (4x+9i)(4x−9i) 4. (4x+9i)2

Acertain volume of water contains 100000 hydrogen atoms and 50,000 oxygen atoms how many hydrogen atoms are in a volume of water containing 4 million oxygen atoms

Which of the following represents the factorization of the trinomial below? x^2+7x-30

Which ordered pair makes both inequalities true? y< 3x-1 and y> -x+4 4,0 1,2 0,4 2,1