We want to factor the following expression: x^4 + 9 Which pattern can we use to factor the expression? U and V are either constant integers or single-variable expressions. Choose 1 A)(U + V)? or (U – V)?
B)(U + V)(U – V)
C) We can't use any of the patterns.

You’re ordering more thread for blue jeans co. you usually purchase from ted’s threads, which sells 12 thread spools for $27. you recently received a notice from wade's wares that says you can buy thread from them for $2.30 each for the first 2 dozen and $2 a spool thereafter. you need to order 5 dozen spools. what percentage can you save by going with wade’s wares?