4 5 square 2 July 8, 2019 16 32 64 128 4 5 square root 2 4 square+5 square+20 square= 2 4 5 square method 4 x square 5 root 2 x minus 3 4 x square 5 root 2 x minus 3 factorise 4 x square 5 x 2 4 x square 5 root 2 x 4 x square 5 x 2 x 3 4 a square 5 a 21 4 x square 5 x 2 ko 4 square root 5 times 2 1 2 3 4 5 square
