Find out the value of a when $$x^3+ax^2+ 2x+3 $$ is divisible by (x+1)?

By increasing the radius of a sphere by 50 percent, how much will the area of its surface increase?

$$ {Cos^4θ +Sin^4θ}={2 \over3} $$ then the value of $$ {Cos^2θ -Sin^2θ+1}$$?

What is the value of x and y in these equations 7x-2y=8 and 3x+4y=18.

The distance between the coordinates ( x,y)  from the original point will be

In the given figure ABCD is a Parallelogram then the find out of the value of x is?

In the given Figure ∠PQA = 20° and ∠APQ = 120° then the find out the ∠ PAQ=?

In the given figure AB, BC and CA is a tangent of a circle if BC=6.3 cm and MC=2.7 cm then the Value of BL is