Question

subtract the sum of 2a square + 5 a b - b square and - 3a square - ab + 2 b square from a square + 4 a b + b square

Answer 1

Sum of 2a square + 5ab - b square and -3a square - ab + 2b square is :-
=2a square + 5ab square - b square + (-3a square) -ab + 2b square
=2a square + 5ab square - b square -3a square -ab + 2b square
=2a square - 3a square +5ab -ab -b square + 2b square
= -1a square + 4ab - 3b square .

Subtract -1a square + 4ab - 3b square from a square + 4ab + b square
= a square + 4ab +b square - (-1a square) +4ab - 3b square
= a square +4ab + b square + 1 a square + 4ab -3b square
= a square + 1a square + 4ab + 4ab + b square - 3b square
= 2a square + 8ab + (- 2b square)
=2a square + 8ab – 2b square .

Answer 2

2a² - 5 AB + 6 b square at a square minus 7b square + 2AB 5ps square minus 7 plus 8 b square