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2. Quadratic formula - Wikipedia

   en.wikipedia.org/wiki/Quadratic_formula

   The roots of the quadratic function y = ⁠ 1 / 2 ⁠ x 2 − 3x + ⁠ 5 / 2 ⁠ are the places where the graph intersects the x-axis, the values x = 1 and x = 5. They can be found via the quadratic formula. In elementary algebra, the quadratic formula is a closed-form expression describing the solutions of a quadratic equation.

3. Equation solving - Wikipedia

   en.wikipedia.org/wiki/Equation_solving

   For example, the equation x + y = 2x – 1 is solved for the unknown x by the expression x = y + 1, because substituting y + 1 for x in the equation results in (y + 1) + y = 2(y + 1) – 1, a true statement. It is also possible to take the variable y to be the unknown, and then the equation is solved by y = x – 1.

4. Methods of computing square roots - Wikipedia

   en.wikipedia.org/wiki/Methods_of_computing...

   A method analogous to piece-wise linear approximation but using only arithmetic instead of algebraic equations, uses the multiplication tables in reverse: the square root of a number between 1 and 100 is between 1 and 10, so if we know 25 is a perfect square (5 × 5), and 36 is a perfect square (6 × 6), then the square root of a number greater than or equal to 25 but less than 36, begins with ...

5. How to Solve It - Wikipedia

   en.wikipedia.org/wiki/How_to_Solve_It

   How to Solve It suggests the following steps when solving a mathematical problem: . First, you have to understand the problem. [2]After understanding, make a plan. [3]Carry out the plan.

6. Synthetic division - Wikipedia

   en.wikipedia.org/wiki/Synthetic_division

   Animation showing the use of synthetic division to find the quotient of + + + by .Note that there is no term in , so the fourth column from the right contains a zero.. In algebra, synthetic division is a method for manually performing Euclidean division of polynomials, with less writing and fewer calculations than long division.

7. Missing grandmother believed to have fallen into sinkhole: Police

   www.aol.com/news/missing-grandmother-believed...

   Pollard was reported missing by a family member shortly before 1 a.m. Tuesday, Limani said at an earlier press conference Tuesday. Pollard was last seen around 5 p.m. Monday, Limani said.