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in this video were going to look at how to solve quadratics by using graphs now in a previous video ive showed you how to solve it whenever equals zero equals a number in this video were going to look at slightly more complex examples so um just to recap what i covered at the end of the last video here weve got the graph of y equals x squared minus two x plus four and we can use this graph to solve an equation such as this x squared minus two x plus four equals two and all you do is if youve got the graph of y equals x squared minus 2 x plus 4 so the graph of the expression on the left hand side of the equation and youve got thats equal to 2 well if you draw the graph y equals 2 on the graph also so lets just draw that now so y equals 2 is the horizontal line passing through 2 on the y-axis like so and to find the solutions to this equation all you need to do is find where those two graphs meet so you just draw the graph for this the graph for this and you find where they meet