0
Anonymous
It equals 0. Zero times zero equals zero.
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x2 - 13x = 0x (x - 13) = 0x = 0andx = 13
a2 + a2 = 2a2
9a squared = 81a^2
when 144 is squared it is the same as 12
No, three squared is nine. 3(squared sign) =3x3 =9