
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
$A$★$B=A\times B-A-B+1$. If $3$★$\left(-4\right)=3\times \left(-4\right)-3-\left(-4\right)+1=-10$. Calculate the following according to the example:<br/>$(1)2$★$5$.<br/>$(2)\left(-2\right)$★$\left(-5\right)$.

Present the answer in LaTex format: \boxed{Your answer}
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