FULHUMBS
When Jeremy factored 144x2 - 100, he first got (12x + 10)(12x - 10). Then he
noticed a common factor, so he factored it further to get 2(6x + 5)(6x - 5).
a. What was his error?
b. What are the correct factors of the original binomial?
c. What is another series of steps you could have taken to factor the original
binomial?

Arrange the steps to solve this system of linear equations in the correct sequence. x + y = -2 2x – 3y = -9 tiles subtract 3x + 3y = -6 (obtained in step 1) from 2x – 3y = -9 (given) to solve for x. substitute the value of x in the first equation (x + y = -2) to get y = 1. the solution for the system of equations is (-3, 1). x = -15 the solution for the system of equations is (-15, 13). add 3x + 3y = -6 (obtained in step 1) to 2x – 3y = -9 (given), and solve for x. x = -3 substitute the value of x in the first equation (x + y = -2) to get y = 13. multiply the first equation by 3: 3(x + y) = 3(-2) 3x + 3y = -6.