Question

29. (a+b) (a+b)
30. (a - b)2 + 4ab = ?
31. (5a +36) (5a - 3b) = ?
32. (a - b)2 + (a + b)2 = ?​

Answer 1

Answer:

(a+b)(a+b)

=a(a+b)+b(a+b)

=a^2+ab+b^2+ab

=a^2+2ab+b^2