How to write the equation in standard form using 5x-y+6=0

Enter the number of complex zeros for the polynomial function f(x) = x 4+ 5x² +6

Problem melissa is her dad build a walkway in their backyard. the walkway will be 54 feet long and 1.5 feet wide. the local hardware store sells tiles which are 1.5 by 1.5 feet and come in boxes of 12. how many boxes of tiles do they need?

25 ! i need asap! ! ill mark brainliest!