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根据下表填空x1616.116.216.316.416.516.616.716.8x2256259.21262.44265.69268.96272.25275.562378.89282.24由上表可得到,268.96的平方根是.

题目详情
根据下表填空
x 16 16.1 16.2 16.3 16.4 16.5 16.6 16.7 16.8
x2 256 259.21 262.44 265.69 268.96 272.25 275.56 2378.89 282.24
由上表可得到,268.96的平方根是______.

x 16 16.1 16.2 16.3 16.4 16.5 16.6 16.7 16.8
x2 256 259.21 262.44 265.69 268.96 272.25 275.56 2378.89 282.24
x 16 16.1 16.2 16.3 16.4 16.5 16.6 16.7 16.8x1616.116.216.316.416.516.616.716.8 x2 256 259.21 262.44 265.69 268.96 272.25 275.56 2378.89 282.24x22256259.21262.44265.69268.96272.25275.562378.89282.24
▼优质解答
答案和解析
∵16.422=268.96,
∴268.96的平方根是±16.4,
故答案为:±16.4.