The expression 1/2 x^2-3 can be rewritten as 1/2 (x-d) (x+d) where d is a positive constant. What is the value of d?

Fanny mendelssohn manages all the magazines and paperback books at a local grocery store. she prices many paperbacks to sell at $7.99. the cost to the store is $5.29. what is the markup rate on a paperback book, based on its cost?

Simplify 15(x - 4)(x -1)-3(x + 4)(x - 1) with steps

Which number completes the inequality? 2/3 < _ < 7/9