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.

The 2 in the numerator should be -2.

Step-by-step explanation:

We are given that a quadratic equation

We have to find error made by Zacharias.

We have a=-2,b=5,c=-3

Quadratic formula : D=

Then,

Substitute the values in the given formula

Therefore, the 2 in the numerator should be -2 .This is the error made by Zacharias.

22 and 22

step-by-step explanation:

10 plus 12 equals 22.

12 plus 10 also equals 22 because regardless of what order they're in, they're gonna equal the same thing.