it is 1
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Any number (except 0) raised to the power of 0 is equal to 1. Therefore, 9 to the zero power is 1, and 11 to the zero power is also 1. So, 9 to the zero power plus 11 to the zero power is equal to 1 + 1 = 2.
If by 3 0 you mean 3º: Any number, except 0, to the 0 power equals 1. For example: 1 = 9/9 = 3²/3² = 3²-² = 3º = 1 To divide 3² by 3², subtract exponents. By extension xª/xª = xº = 1, x <> 0 "<>" signifies "is not equal to" since it means "is less than or greater than" and therefore not equal to
x4 -8x2 - 9 =0 Factorise = (x2+1)(x2-9)=0 x2+1 =0 so x is square root of -1 which is impossible. the other equation is (x+3)(x-3) = 0 here x is equal to +3 or -3. The zero in this question means that the LHS if equal to the RHS which is zero. You are interested in working out x.
if you look on at this. 3^2=9 3^1=3 3^0=1 it's dividing by 3 every time so the answer for 3^0 =1
1