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What is the sum of all possible values of x such that 2x(x + 10) = -50?

 Oct 21, 2020
 #1
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2x(x + 10) = -50    expand to

2x^2 + 20x + 50 = 0     divide by 2 (for simplicity.....you could just use Quadratic Formula here)

x^2 + 10 x + 25 = 0

(x+5)(x+5) = 0                     x = -5    

 Oct 21, 2020

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