X 4 7x 2 12 factor July 8, 2019 16 32 64 128 Factorise x^4 + 7x^2 + 12 X 4 2x 3 7x 2 8x 12 factorise Factor x 4 2x 3 7x 2 8x 12 2x 2 7x 4 )( x 2 x 12 factored Factor x 4 4x 3 7x 2 16x 12
