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64 square meters The formula for the area of a square is length squared, and 8m squared is 64m2
m2 - 8m + 16 = 0 (m - 4)2 = 0 so m = 4
6a2b2c2d2 + 2abcd2 can be factorised to 2abcd2*(3abc + 1)
x2 - 41 cannot be factorised.
5/6m-5/2-7/8m+2