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can someone please solve this

We'll have to repeatedly square both sides of the equation, in order to get rid of the square roots. Squaring a first time yields

Move the 19 to the right hand side:

And square again:

Square one last time:

Let's check the solutions: all these squaring might have created external solutions:

So, is a feasible solution.

the answer is 15% decrease

439400

step-by-step explanation:

130^2 = 16900

16900*26 = 439400