Question

solve: (2x+5) (x-7)= 0

Answer 1

$(2x+5)(x-7)=0$

Since a product can be zero if one of their factors are equal to zero, it follows that:

$x-7=0\Rightarrow x=7$

or

$2x+5=0\Rightarrow x=-\frac{5}{2}$

Then the solutions will be x=7 or x=-5/2