1.) 2xsquare+3xsquare+7x=0 2.)5xsquare+10xsquare+9x=0 3.)700xsquare+100xsquare+50x=0 4.)3x+9xsquare+6xsquare=0 45xsquare+5x+10xsquare=0 because all square and the equation that can be factored with no negative sign can considered as quadratic equation.
