How do I Simplify (2x - 4x2 + 4) + (3x2 + 3x - 7)?

Find the equation of the line that goes through the points (4, –1) and (2, –5). use slope formula,equation,to find the slope of a line that passes through the points. m = use slope-intercept form, y = mx + b, to find the y-intercept (b) of the line. b = write the equation in slope-intercept form, y = mx + b.

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)

Which shows how to solve the equation 3/4x=6 for x in one step?