16
16 x 16 = 256
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256 squared is 65,536.
The cube root of 256 is: 5.11722995A:The cube root of 256 is 6.3496055.117229953 is 134. Not 256
16 squared is 256.
4m2-256 = 0 Add 256 to both sides: 4m2 = 256 Divide both sides by 4: m2 = 64 Square root both sides to find the value of m: m = 8 Alternatively, if 4m is to be squared, and not just the m: (4m)2 - 256 = 0 16m2 - 256 = 0 16m2 -256 + 256 = 256 16m2 = 256 16m2/16 = 256/16 m2 = 16 √m2 = √16 m = ±4
256.