7. If p(x) = (x÷5) + 2, find x when p(x) = 1

In a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.

What is the missing reason in the proof? segment addition congruent segments theorem transitive property of equality subtraction property of equality?

State one method by which you can recognize a perfect square trinomial.