Add `3a^(2)-4a+1` to the product of `3a-2` and `a+5`

The product of 3 and 4(2/5) is:

Add the sum of 5x^(2)-2y^(2)+1 and 3x^(2)-y^(2) to the product of 4x+y and 2x-3y

Add 3/5+2/5

Add : 3ab^(2) , - 5ab^(2)

Add 3x^2+5-4 and 6+ 6x^2 .

Add -3/4 and 5/6

The product of 4a^(2),-6b^(2) and 3a^(2)b^(2) is

Add 2 4/5 and 3 5/6

Add(2)/(5) to (1)/(3)

In the following number series how many 5's are there which are immediately preceded by a pair of numbers whose product is more than the product of the pair of numbers immediately following 5 ? 3 4 5 6 3 5 7 8 5 1 9 5 2 4 5 5 1 2 3 5 4 2 5 7 1 5 6 3 2 5 4 7 1) 4 2) 5 3) 6 4) 2 5) None of these