+ You can simplify a root by factoring the root number another number that is rational. Or in other words, divide the root number by the perfect squares. For example;
+
+
+ Simplify 60
+ 60 = 4 × 15 = 215
+
+
+ Simplify 48
+ 48 = 16 × 3 = 43
+
+
+ Simplify 125
+ 125 = 25 × 5 = 55
+
+
+
+
Root Operations
+
Addition
+ Roots with coefficient can be added with another coefficient that have the same roots.
+ ac + bc = (a + b)c
+
+
32 + 42 = (3 + 4)2 = 72
+
5 + 35 = (1 + 3)5 = 45
+
+
Subtraction
+ Roots with coefficient can be subtracted with another coefficient that have the same roots.
+ ac - bc = (a - b)c
+
+
73 - 43 = (7 - 4)3 = 32
+
106 - 56 = (10 - 5)6 = 56
+
+
Multiplication
+ Roots can be multiplied with any other roots. If the root is the same as the other multiplied root, the root can be deleted (if you want to be faster).
+ ac × bd = (a × b)c × d
+
+
2 × 5 = 10
+
32 × 43 = (3 × 4)2 × 3 = 126
+
25 × 35 = (2 × 3)(5) = 6(5) = 30
+
+
Division
+ Roots can be divided with any other roots.
+ ac ÷ bd = (a ÷ b)c ÷ d
+
+
+ 12 ÷ 3 = 2
+
+
+ 86 ÷ 43 = (8 ÷ 4)6 ÷ 3 = 22
+
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+ Al Azhar 9th Grade Lesson Notes
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