(x - 6) (x + 4) = x2 - 2x - 24
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The square root of x12 is x6 .
Guessing they are powers and no operational symbol is between the two (ie a multiplication is assumed), then: x6 x2 = x6 + 2 = x8 Otherwise, re-ask with words for missing symbols, eg "what is x to the power 6 plus x to the power 2 simplified"
sqrt( x13 ) = sqrt ( x12 times x ) = sqrt ( x12 ) times sqrt( x ) = x6 times sqrt( x ).
Replace the letters by the values, remembering that when a letter is next to another or a number it means multiply; thus: x^6 + 2y =3^6 + 2x1 = 731. (if x6 is intending to mean x^6).
x2 + y4 + x4 +y2 = x6 + y6unless you know what x and y are.* * * * *x2 + y4 + x4 + y2 ??I don't believe that this expression can be factorised or otherwise simplified.It certainly does not equal x6 + y6,for all x and all y:for example, if x = y = 1, thenx2 + y4 + x4 + y2 = 4, whilstx6 + y6 = 2;thus, they are two manifestly unequal quantities.