The simplest expression.
Solution: The simplest expression is 12x2−x−35.
Given: The expressionis (3x+5)(4x−7) .
The provided expression is
(3x+5)(4x−7).
Simplify it as follows:
(3x+5)(4x−7)=3x(4x−7)+5(4x−7)=12x2−21x+20x−35=12x2−x−35
Conclusion: The simplest expression is (3x+5)(4x−7)=12x2−x−35.