Question

simplify the following algebraic expressions:

7a²+6ab +9b²-25ab - 8b² +2a² - 5ab ​

Answer 1

Answer:

$7a {}^{2} + 6ab + 9b {}^{2} - 25ab - 8b { }^{2} + 2a {}^{2} - 5ab \\ = 7a {}^{2} + 2a {}^{2} + 6ab - 25ab - 5ab + 9b {}^{2} - 8 b {}^{2} \\ = 9a {}^{2} + 6 ab - 30ab + b {}^{2} \\ = 9a {}^{2} - 24ab + b {}^{2}$