Frac 4x^ 4 y^ 7 2x^ 8 y^ 7 2x8y74x4y7 July 8, 2019 16 32 64 128 Frac 4x^ 2 y^ 4 2x^ 7 y^ 8 2x7y84x2y4 Frac 4x^ 3 y^ 7 8x^ 7 y^ 8 8x7y84x3y7