`(450div30)^(2)-(12)^(2)=(?)^(2)`

The value of (0.0203xx2.92)/(0.7xx0.0365xx 2.9) div ((12.12)^2-(8.12)^2)/((0.25)^2+(0.25) (19.99)) is :- (0.0203xx2.92)/(0.7xx0.0365xx 2.9) div ((12.12)^2-(8.12)^2)/((0.25)^2+(0.25) (19.99)) का मान ज्ञात कीजिए?

(0.12 div 0.15)/(2) = ?

What is the value of (3)/(7) div (9)/(21) +2-(4)/(3)+(1)/(2)" of "(12)/(5) xx (25)/(18) div (5)/(9) ?

Simplify the following 3.6a^(3)b^(2)c div 1.2 ab^(2)c^(3)

(2 ^(-5) div 2 ^(-2))= ?

[(1-tan^(2)30^(@))div(1+tan^(2)30^(@))]-sin30^(@)= A)-1 B)0 C)1 D)2