ALGEBRA

Algebra



Algebra

Solution to Problem 1:

The student did not bring 5 over the other side.

x^2 + 4x - 5 = 0

The student did not factored in place of using the quadratic formula in order to get;

(x + 5) (x - 1) = 0

with x = 1 and x = -5 as solution,

Moreover, the student used c = 5 in place of c = -5

Solution to Problem 2:

After analyzing the given solution 4 of the problem, it can be said that the expression (x - 2) (x + 1) > 4 can be written as (x - 2) (x + 1) - 4 ...