10 5x 4 10 2 3x 3 July 8, 2019 16 32 64 128 4 5x 2 )= 10 3x 3 )+ 15 10 5x3 4x-10 10 3x-5 1 10-4x =3(1-x) 3 5+x/4 2x 10 + 5 x 4