6⅔ find the factor.

If A {x:x is a factor of 42 }
B = {x:x is a factor of 54}
Then find AUB, AnB, A-B and B-A.​

Write the power set of the following set B={x,y,z}​

$x = {-b \pm \sqrt{b^2-4ac} \over 2a}$ using this solve the equation .

9x^2+2x+8=0.

Find the value of integration:

$\int\frac{sinx+1}{1-cosx}dx$

Evaluate the  integration

$\int\frac{sinx+2x+1}{cosx+4x+2}dx$

Curie is the unit of_____?

Who was the inventor of Radar?

Solar radiation is measured by_____?

Relative humidity is measured by____?