Which best explains why the expression 1 b2 - 4ac
cannot be rewritten as b1-4ac during the next step?
o
negative values, like -4ac, do not have a square root.
the i symbol prevents the square root from being
evaluated.
the square root of terms separated by addition and
subtraction cannot be calculated individually.
the entire term b2 - 4ac must be divided by 2a before
its square root can be determined.
o

Use the following statements to write a compound statement for the conjunction or disjunction. then find its truth value. p: an isosceles triangle has two congruent sides. q: a right angle measures 90° r: four points are always coplanar. s: a decagon has 12 sides. a) a right angle measures 90° or an isosceles triangle has two congruent sides; true. b) a right angle measures 90° and an isosceles triangle has two congruent sides; true. c) a right angle measures 90° and an isosceles triangle does not have two congruent sides; false. d) a right angle measures 90° or an isosceles triangle does not have two congruent sides; true.