Factor the perfect-square trinomial in y = (x2 + 2x + 1) − 1− 1.
y = (x +
)2 − 1 −1

Matt and brian were solving a system of equations. they both noticed that the two lines had the same slope. brian said that because each line in the system had the same slope, the two lines had to be parallel, which meant the solution to the system was "no solution" matt disagreed, and said they should also look at the y-intercepts before determining how many solutions there were. who is correct?

An investment decreases in value by 30% in the first year and decreases by 40% in the second year. what is the percent decrease in percentage in the investment after two years

Complete the solution of the equation. find the value of y when x equals -5. -4x - 8y = -52