1c. Provided the expression under the radical sign, b2– 4ac, is positive, how many
solutions will the quadratic formula give for a quadratic equation? Explain.

actually what is a question i don't understand

there should be an link icon on the bottom of the text box you get. it looks like a paperclip!

2 equivalent expressions to represent the area of a rectangle and the top is n-3 and the side is 2

area of the rectangle = length * width

given length = n - 3

width = 2

replace it in the area

so area of the rectangle = (n-3) *2

= 2(n-3)

one of the expression is 2(n-3)

to get another expression we distribute 2 inside the parenthesis

2(n-3) is 2n - 6

so another expression is 2n - 6

two equivalent expression are

2(n - 3)   , 2n - 6