Vocabulary Square Root: If A = s 2, then s is a ____________________ of A. example: 25 = 5 2, 5 is a square root of 25 Cube Root: If V = s 3, then s is a __________________ of V. example: 27 = 3 3, 3 is a cube root of 27 square root cube root
You need to remember: Perfect Squares 1 = 1 x 1 = = 2 x 2 = = 3 x 3 = = 4 x 4 = = 5 x 5 = = 6 x 6 = = 7 x 7 = = 8 x 8 = = 9 x 9 = = 10 x 10 = 10 2 Radicals (square roots) √1 = 1 √4 = 2 √9 = 3 √16 = 4 √25 = 5 √36 = 6 √49 = 7 √64 = 8 √81 = 9 √100 = 10
We discussed earlier that the inverse of an operation would “undo” that operation. The inverse operation of squaring a number is the square root ( √) of that number.
525 You probably chose 5 because 5●5=25 You could also say that the square root of 25 equals 5
464 You probably chose 4 because 4●4●4=64 You could also say that the cube root of 64 equals 4
Because 14●14=196 Because 6●6●6=216
Find the missing value: This is also the same as solving the equation:
Are there any other values for x that would also be a solution to this equation? x could also equal -10 because -10●-10 = 100? This symbol means positive or negative
Find the missing value: This is also the same as solving the equation:
Are there any other values for x that would also be a solution to this equation? Could x also equal -2 ? No, because -2●-2●-2=-8
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Simplify:
Simplify:
Simplify: