Answers edited by Luca F.

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How do you factor $z^6 - 1$ ?
How do you solve by substitution $4x-9y=-21$ and $4x+3y=-9$ ?
How do you find the domain and range for $y = 5arcsin(2cos(3x))$ ?
How do you graph the system $y < 2x + 4$ and $2x - y<=4$ ?
How do you find the points of discontinuity of $y = ((x - 1)(x + 3)) / ((x + 3)(x - 5))$ ?
How do you write an equation in standard form given that the line passes through (-1, -3) and (2, 1)?
How do you find the global extreme values for $V(x) = x(10 - 2x)( 16 - 2x)$ on [0,5]?
How do you simplify $(5)/(2a^11b^7)$ ?
What is the slope of $x=3$ ?
How do you multiply $(2x^4)/ (10y^2) * ( 5y^3)/(4x^3)$ ?
The area bounded by the curve $y=3+2x-x^2$ and line $y=3$ is rotated completely about the line $y=3$ . Find the volume of the solid of revolution obtained?
The top and bottom margins of a poster are 4 cm and the side margins are each 6 cm. If the area of printed material on the poster is fixed at 384 square centimeters, how do you find the dimensions of the poster with the smallest area?
How to graph a parabola $x-2=1/8(y+1)^2$ ?
How do you solve $2cosx+1=0$ ?
How do you find the asymptotes for $f(x) = (x^2+4x-2)/(x^2-x-7)$ ?
How do you simplify $(-4)^-3$ ?
How do you solve and graph the compound inequality $3x>=5$ or $-5/8x-6>1$ ?
How do you graph $y = -sin(2x)$ ?
How do you find the volume of the region below $y= -3x+6$ and enclosed by the y-axis from 0 to 2, rotated about the x-axis?
Where are the critical points of $tan x$ ?
How do you find the inverse of sin?
How do you know if $49x^2 − 28x + 16$ is a perfect square trinomial and how do you factor it?
Who discovered logarithm?
How do you find $2p^2 + 3p - 4$ less $- 2p^2 - 3p + 4$ ?