The simplification of the given expression is (x - 3).
What are equivalent expressions?
Those expressions who might look different but their simplified forms are same expressions are called equivalent expressions.
Given expression;
[tex]\dfrac{x^2 +7x -30}{x+ 10} \\\\[/tex]
lets factor ;
x^2 +7x -30
(x +10)(x -3)
Now, substitute;
[tex]\dfrac{x^2 +7x -30}{x+ 10} \\\\\\\\dfrac{(x +10)(x -3) }{x+ 10} \\\\[/tex]
= (x-3)
Learn more about expression here;
https://brainly.com/question/14083225
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