Question

(x+1)² - x²=17 e x(x + 5) = (x+1)²+26

Answer 1

Olá Denilson

(x + 1)² - x² = 17

x² + 2x + 1 - x² = 17

2x = 16

x = 8

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x*(x + 5) = (x + 1)² + 26 

x² + 5x = x² + 2x + 1 + 26

3x = 27

x = 27/3 = 9

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