Question

Zacharias is using the quadratic formula to solve the equation 0 = –2x2 5x – 3. he begins by substituting as shown.quadratic formula: x = substitution: x = what error did zacharias make?the –5 should be 5. the 52 should be –52.the 2 in the numerator should be –2.the 2 in the denominator should be –2.

Answer 1

The 2 in the denominator should be –2.

Explanation:

a=-2 and Zacharias did not include the negative.

Answer 2

D is the answer

Explanation: