Check by division, algorithm, whether x2-2 is a factor of x4 + x3 + x2-2x -3.

What is the vertex form of f(x) = x2 + 6x + 3

In the following diagram it is given that dec,ab || dc, ad || eb, and ad is congruent to bc. a)why isn't abc a parallelogram even though it has a pair of parallel sides and a pair of congruent sides b)explain why be must be congruent to bc. further explain what type of triangle this makes triangle abc and what it tells you about angle 1 and angle 2c) finally why must angle 3 be congruent to angle 1? further, explain why we know that angle 3 is congruent to angle 2

Solve the formula ax+ by = c for x.