x^(3)-2x^(2)-7x+5

A function h is defined as follows : for x gt 0, h(x)=x^(7)+2x^(5)-12x^(3)+15x-2 for x le0, h(x)=x^(6)-3x^(4)+2x^(2)-7x-5 What is the value of h(-1) ?

If 2x=3+5i, then what is the value of 2x^(3)+2x^(2)-7x+72 ?

Check whether the following are quadratic equations : (1) (x-3)^(2)=x(2x-5) (2) (2x-3)(8x+1) = (4x+5)(4x-5) (3) (5x+3)(x-2)=(4x+3)(2x-1) (4) (2x+5)^(3)=8(x-1)^(3) (5) x^(2)+7x-8=x(x+5) (6) x^(3)+9x^(2)-7x+2=(x+3)^(3)

Evaluate: int(5x^(3)+2x^(-5)-7x+(1)/(sqrt(x))+(5)/(x))dx

Evaluate: int(5x^(3)+2x^(-5)-7x+(1)/(sqrt(x))+(5)/(x))dx

The quotient and the remainder when 2x^(5)-3x^(4)+5x^(3)-3x^(2)+7x-9 is divided by x^(2)-x-3 are