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Didactalia: material educativo > 12-14 anos

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Solving Equations with Square Roots

"Many of the formulas for calculating volumes (prism volume, volume of cylinders, volume of cones formulas and volume of pyramids) require solving equations with square roots or cube roots. To solve t ...

Finding the Equation of a Line

"Sometimes we'll be given a graph of a line, and told to find the equation. There are many methods of finding the equation of a line with only a graph such as finding the slope and a point or finding ...

Solving Equations with a Variable on Both Sides

"In order to figure out where to start when solving equations with a variable on both sides of the equals sign, we will need some useful methods and practice. There are many methods we use to solve fo ...

Find the Slope of a Line

"If given the equation of a line, or two points on the line we can try to find the slope of a line from two points. This is often the most efficient way to calculate slope, and can be done with a simp ...

Solving and Graphing Inequalities

"Inequalities are useful for finding a range of solutions. Solving and graphing inequalities is a key to finding and showing that range. We can solve inequalities using a lot of the same methods as th ...

Find the Hypotenuse

"The hypotenuse of a right triangle is the side that is opposite of its right angle. Sometimes we have problems that ask us to find the missing hypotenuse of a right triangle. We can use the Pythagore ...

Find a Missing Leg

"The legs of a right triangle are the sides that are adjacent to its right angle. Sometimes we have problems that ask us to find a missing length of one of these legs. We can use the Pythagorean theor ...

"Factoring Trinomials with ""a"" Not Equal to One"

"One of the final steps in learning to factor trinomials is factoring trinomials with "a" not equal to one. In this case, "a" is the leading coefficient, or the coefficient of the squared term. When f ...

Factoring Trinomials by Grouping

"Sometimes we can use factoring trinomials by grouping terms with common factors. Being able to recognize terms that share a common factor and grouping them is a skill that will be used often througho ...

Factoring Trinomials

"When given a trinomial, or a quadratic, it can be useful for purposes of canceling and simplifying to factor it. Factoring trinomials is easiest when the leading coefficient (the coefficient on the s ...

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