Simplify the following :
`5x^(4) - 7x^(2) +8x - 1 +3x^(2) - 9x^(2) + 7 - 3x^(4)+11x - 2 +8x^(2)`

Simplify the following: 7x^3+8y^3-(4x+3y)(16 x^2-12 x y+9y^2)

Find the sum of the following algebraic expressions : 3x^(3) - 5x^(2) + 2x + 1 , 3x - 2x^(3) - x^(3) , 2x^(2) - 7x + 9

Simplify the following 9x-[8-(3-7x)-3[5x-3(4-2x)}]

Subtract : 2x^(4) - 7x^(2) + 5x + 3 " from " x^(4) - 3x^(3) - 2x^(2) + 3

Simplify the following 4x-[3x-(1-5x)-6[8-3(2x+7)]]

Differentiate the following functions: 7x^(6) + 8x^(5) - 3x^(4) + 11x^(2) + 6x+7

Differentiate the following functions: 12. 8x^(3) - x^(2) + 5 - (2)/( x ) + (4)/( x^3) .

Subtract : 5x - 3x^(2) + 8xy from 7x^(2) + 3xy - 4x .

Evaluate lim_(x to 2) (x^(3) - 3x^(2) + 4)/(x^(4) - 8x^(2) + 16)

Add the following algebraic expressions : (i) 5x^(3)- 3x + 7 , 2x^(2) - 11 and 7x^(3) - 11x^(2) + 4x- 3