Question

Спростити вираз (12ab-b²)-(5ab+b²)+(ab+2b²)

Answer 1

Объяснение:

(12ab-b²)-(5ab+b²)+(ab+2b²) = $12ab - {b}^{2} - 5ab - {b}^{2} + ab + 2 {b}^{2} = 8ab + 0 = 8ab$