Find all x∈ ℝ such that (x^2)−x+6=0

Which of the following statements is not true? a.parallel lines are lines in the same plane that never intersect. b.congruent figures have the same shape and same size angles and sides. c.similar figures must have the same shape and the same size. d.a rotation is when you turn a figure around a certain point.

Three times the sum of a number and seven is negative thirty-six. what is the number?

What is 0.000008 meters in scientific notation