Question

1,2ab+0,8b2 -0,2ab+2,2b2+2ab

Answer 1

Объяснение:

всё написано на фотографиях надеюсь понятно 3ab+6b

Answer 2

To simplify the expression $1.2ab + 0.8b^2 - 0.2ab + 2.2b^2 + 2ab$, you can combine like terms by adding or subtracting them:

1. Start by combining the terms with "ab": $1.2ab - 0.2ab + 2ab = (1.2 - 0.2 + 2)ab = 3ab$

2. Next, combine the terms with $b^2$: $0.8b^2 + 2.2b^2 = (0.8 + 2.2)b^2 = 3b^2$

Now, you have simplified the expression to $3ab + 3b^2$.