Perfect Square Trinomial-By Grouping
With complete answer!
Ex.(8mt-12at)-(10mh+15ah)
4t(2m-3a)-5h(2m-3a)
Answer:(2m-3a)(4t-5h)

Questions:
1.7s+35om+9se+45oe
2.42wa+54wt+56ha+72ht
3.36yu-24ro+12ou-72yr
4.72he+16we+27hn+6wh
5.26wr-91or+35od-10wd