Some of the steps in the derivation of the quadratic formula
are shown.
2
Step 4: - 4ac + b2
4a
2 – 4ac
Step 5: (
b? = dx+
= (}fx+ med
=(x +
4a
b2 - 4ac
Step 6:
b
2a
49²
Step 7:
16
- 4 ac
2a
=X+
2a

Measures of the angle of r, 31 s (x+4) t (3x+9)

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.