The area of a parallelogram is ... A = bh Substituting the given values, you have A = (3x +5)(7x -1) We presume you want the product multiplied out. Use the distributive property for that. A = 3x(7x -1) +5(7x -1) A = 21x² -3x +35x -5 A = 21x² +32x -5
