Question

Efetue: A(7x^2-6x)+(-2x^2+1)
B)(3a^2b-4ab^2)+(ab-4a^2b)-(3ab^2-2ab)

Answer 1

a)
= (7x^2-6x)+(-2x^2+1)

= 7x² - 6x - 2x² + 1

= 7x² - 2x² - 6x + 1

= 5x² - 6x + 1

****************************************
b)

= (3a^2b - 4ab^2)+(ab-4a^2b)-(3ab^2-2ab)

= 3a²b - 4ab² + ab - 4a²b - 3ab² + 2ab

= 3a²b - 4a²b - 4ab² - 3ab² + ab + 2ab

= - a²b - 7ab² + 3ab

******************************************************