[" 62.",4sqrt(9)(4b^(2)+(1)/(b^(2)))=2(1)/(81),(7)/(9)-:(8b^(3)+(1)/(b^(3)))=?],[[" (a) "0," (b) "1,]]

If (4b^(2)+(1)/(b^(2)))=2, then (8b^(3)+(1)/(b^(3)))=? (a) 0 (b) 1 (c) 2 (d) 5

sqrt((25)/(81)-(1)/(9))=?(2)/(3)( b) (4)/(9)( c) (16)/(81) (d) (25)/(81)

9-1(2)/(9) of 3(3)/(11)-:5(1)/(7) of (7)/(9)=?(5)/(4)(b)8(c)8(32)/(81) (d) 9

[{(-1/3)^2}^(-2)]^(-1) = (a) 1/(81) (b) 1/9 (c) -1/(81) (d) -1/9

[{(-1/3)^2}^(-2)]^(-1) = (a) 1/(81) (b) 1/9 (c) -1/(81) (d) -1/9

What is (1)/(a-b) -(1)/(a+b) -(2b)/(a^(2)+b^(2))-(4b^(3))/(a^(4)+b^(4)) -(8b^(7))/(a^(8)-b^(8)) equal to ?

If 2a+b+3c=1 and a>0,b>0,c>0 then the greatest value of a^(4)b^(2)c^(2) is (1)/(9.4^(8)) b.(1)/(9.4^(5)) c.(1)/(9^(4).4^(8)) d.(1)/(9^(4).4)

If A=((6,2),(7,-5)) and A-B=((-2,1),(4,-9)) , then B=

If A=[(4, 3, 1), (2, 3, -8), (1, 0, -4)], B=[(2, 3, 4), (1, 9, 2), (-7, 1, -1)], C=[(8, 3, 4), (1, -2, 3), (2, 4, -1)] then verify that A+(B+C)=(A+B)+c