I need help finding
X

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

Adam plans to choose a video game from the section of the store where everything is 75% off. he writes the expression d-0.75d to find the sale price of the game if the original price is d dollars. gena correctly writes another expression, 0.25d, that will also find the sale price of the game if the original price is d dollars. use the drop down menus to explain each part of adams and rena's expression

What is the value of x in the equation 2(x-4) = 4(2x + 1)?