First of all, (4x-+3)(-2x-5) is the same as (4x-3)(-2x-5) So the method for solving these can be remembered by FOIL. F= Firsts O= Outsides I= Insides L= Lasts
In other words everything is multiplied by everything, for example: 4x * -2x and -3 * -5 <span>is the firsts of the brackets multiplied and last of the brackets mulitplied </span> 4x * -5 and 3 * -2x is the outsides of the brackets multiplied and the insides of the brackets multiplied <span> The SUM of FOIL is then added:</span><span> </span><em>4x*-2x = -8x^2</em> <em>-3*-5= 15</em> <em>4x*-5=-20x</em> <span><em>3*-2x=-6x</em> </span><span>-8x^2 -20x -6x + 15 = 0 -8x^2 -26x + 15 = 0 So the factored of (4x-3)(-2x-5) <u /><em>=</em> -8x^2 -26x + 15 = 0
So then you graph that equation on your given grid
