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Basic Math
Arithmetic
Fractions & Decimals
Ratios & Proportions
Percentages
Basic Number Theory
Pre-Algebra
Integers & Absolute Values
Factors & Multiples
Prime Factorization
Basic Equations & Inequalities
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Algebra
Linear Equations & Inequalities
Quadratic Equations
Polynomials & Factoring
Functions & Graphs
Systems of Equations
Trigonometry
Trigonometric Functions
Trigonometric Identities & Equations
Right Triangle Trigonometry
Unit Circle
Graphing Trigonometric Functions
Calculus
Limits & Continuity
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Integrals & Applications
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Example
3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b
Question
$$\sqrt{ 1564 }$$
Evaluate
$2\sqrt{391}\approx 39.547439867$
Solution Steps
Factor $1564=2^{2}\times 391$. Rewrite the square root of the product $\sqrt{2^{2}\times 391}$ as the product of square roots $\sqrt{2^{2}}\sqrt{391}$. Take the square root of $2^{2}$.
$$2\sqrt{391}$$
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