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x = 2 so x squared = 4 and 2x squared = 2 times 4 = 8; y = 4 so xy = 2 times 4 = 8 and 3xy = 3 times 8 = 24; y squared = 4 times 4 = 16 and 4y squared = 4 times 16 = 64; so 8 + 24 - 64 = 32 - 64 = -32
4 squared is 16. 4 squared means that 4 is used as a factor 2 times. 4x4=16
A squared number is the product of an integer times itself. So, 16 is a squared number. 4 * 4 = 16.
A number squared is just that number times itself. For example four squared is four times four equals sixteen (42 = 4 x 4 = 16).
4,096 or 4 to the sixth power. When multiplying numbers with powers you add the powers if the whole number is identical. 4 squared x 4 squared is 64, x 4 squared is 4096