Example 3 Continued Step 2 Solve the equation for x to find the critical values. x2 –10x + 21 = 0.
{"Image DocumentName": "Example 3 ContinuedStep 2 Solve the equation for x to find the critical values. x2 \u201310x + 21 = 0.", "Image ImageDescription": "Write in standard form. (x \u2013 3)(x \u2013 7) = 0. Factor. x \u2013 3 = 0 or x \u2013 7 = 0. Zero Product Property. x = 3 or x = 7. Solve for x. The critical values are 3 and 7. The critical values divide the number line into three intervals: x \u2264 3, 3 \u2264 x \u2264 7, x \u2265 7.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}