Numeracy - Home - Polk School District

Sep 02, 2010 · Solve a quadratic inequality algebraically. Solve x2 ( x ( 12. First, write and solve the equation obtained by replacing ( with _=_. _x2 + x = 12_ Write corresponding equation. _x2 + x ( 12 = 0_ Write in standard form. _(x + 4)(x ( 3) = 0_ Factor. _x = (4 or x = 3_ Zero product property. The numbers _(4 and 3_ are the critical x-values of the ... ................
................