How many pieces each 19/8 cm long can be cut from a piece of wire 38cm long

Plzzz plzz maths ! quadratic sequences =an^2+bn 1) 1,6,15,28,45 2)5,18,39,68,105 3) 1,8,21,40,65 4) 7,24,51,88,135 5) -1,2,9,20,35

If you are trying to move an attached term across the equal sign (=), what operation would you use to move it?

Can someone me out here number 4 plz