Given that the binomial expansion of (1 + kx)^-4, |kx| <1, is 1-6x + Ax^2 + ...

a) Find the value of the constant k,
b) Find the value of the constant A, giving your answer in its simplest form

Can someone me with this problem . show your work .

At the electronics store you have a coupon for 20% off up to 2 cds you buy for cds with the original cost of $10.99 each the sales tax is 5% what is the total cost of your purchase

Mrs. avila is buying a wallpaper border to go on all of her kitchen walls. she wants to buy 5 extra feet of wallpaper border than she needs to be sure she has enough. she buys 55.5 feet of the border. the store owner selling the border uses the width of mrs. avila's kitchen to determine that the length of her kitchen must be 14.5 feet.