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You don't have to write the ± sign but if you don't, you then need to write out both equations x+6 = 5 and x+6 = -5 and then solve each equation to get your two answers.
The inverse operation of taking the square is taking the square root. However, unlike the other operations, when we take the square root we must remember to take both the positive and the negative square roots.
Analyze the process of solving a quadratic equation by taking the square root.
Sal solves the equation 2x^2+3=75 by isolating x^2 and taking the square root of both sides.
Solve simple quadratic equations by taking the square root of both sides of the equation.
Solve quadratic equations of the form (x+a)²-b=0. These can be solved using square roots. For example, solve (x-5)²-4=0.
The inverse operation of taking the square is taking the square root. However, unlike the other operations, when we take the square root we must remember to take both the positive and the negative square roots.
Quadratic equations Solving quadratic equations by extracting the square roots Solving quadratic equations by factoring Solving quadratic equations by completing the square Solving quadratic equations by using the quadratic formula Roots of quadratic …
Solve quadratic equations of the form (x+a)²-b=0. These can be solved using square roots. For example, solve (x-5)²-4=0.
And so now, I could take the square root of both sides and, or, another way of thinking about it, if I have something-squared equaling four, I could say that that something needs to either be positive or negative two.
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