11.6 Quadratic Equations in Action and a Look Ahead
Point 5 of 5
11.6.5 From "Equal" Toward "Not Equal"
Core idea
An equation asks "what does it exactly equal," but life often asks "at least" or "no more than" — swap the equals sign for an inequality sign and you step into the next stage.
Module goal. Use quadratic equations to solve real problems about area, growth rates, and more, then carry the "equals" mindset toward the next stage's "not equals."
eastmath.com · 11.6 Quadratic Equations in Action and a Look Ahead · 11.6.5 From "Equal" Toward "Not Equal"