Question

Help please, I will send a photo

Answer 1

The expressions in the provided questions seem a bit disorganized, but let's break them down and solve them step by step.

`a) \(12m * 0.2m + 3.5m^2 - 27 + 4.5m^2 - 0.2m - 15m\)`

Combine like terms:

`\[ 12m * 0.2m + 4.5m^2 + 3.5m^2 - 0.2m - 15m - 27 \]`

`\[ 2.4m^2 - 11.7m - 27 \]`

`b) \(92^\circ - 0.3a - 12a + 0.422 + 7a - 0.243 + 1.7a + (-3a) - 13a - 0.5a\)`

Combine like terms:

`\[ 92° - 12a - 3a + 7a + 1.7a - 13a - 0.3a - 0.5a + 0.422 - 0.243 \]`

`\[ 92° - 19.1a + 0.179 \]`

`c) \(2ab^2 + 3a^2b - 5a - 7a + 3b^2 - 39b - 6a - 2b\)`

Combine like terms:

`\[ 3a^2b + 2ab^2 + 3b^2 - 12a - 41b \]`

These are simplified expressions for the given mathematical expressions.