Solving Equations with Square Root

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What is the square root of a number?

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The square root of a number x is a value y such that y² = x. For example, the square root of 9 is 3, since 3² = 9.

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CCSS.8.EE.A.2

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How do you isolate a variable in an equation?

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To isolate a variable, perform inverse operations to both sides of the equation until the variable is alone on one side.

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CCSS.6.EE.B.7

Front

What is the principle of taking square roots in equations?

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When you take the square root of both sides of an equation, you must consider both the positive and negative roots.

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CCSS.HSA-REI.B.4B

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Back

Tags

CCSS.8.EE.A.2

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Back

Tags

CCSS.8.EE.A.2

Front

Back

Tags

CCSS.8.EE.A.2

Front

Back

Tags

CCSS.8.EE.A.2

Front

Back

Tags

CCSS.8.EE.A.2

Front

What does it mean if an equation has no real solutions?

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An equation has no real solutions if the operations lead to a contradiction, such as a negative number under a square root.

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

Front

What is the standard form of a quadratic equation?

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