1) (x+4)² - x² = 0
x² + 8x + 16 - x² = 0
8x = - 16
x = - 2
2) (x-3)² - x² = 0
x² - 6x + 9 - x² = 0
- 6x = - 9
x = 1,5
3) (x+5)² - x² = 0
x² + 10x + 25 - x² = 0
10x = -25
x = - 2,5
4) x² - (x+1)² = 0
x² - x² - 2x - 1 = 0
- 2x = 1
x = 0,5
5) x² - (x+4)² = 0
x² - x² - 8x - 16 =0
- 8x = 16
x = -2
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Answers & Comments
1) (x+4)² - x² = 0
x² + 8x + 16 - x² = 0
8x = - 16
x = - 2
2) (x-3)² - x² = 0
x² - 6x + 9 - x² = 0
- 6x = - 9
x = 1,5
3) (x+5)² - x² = 0
x² + 10x + 25 - x² = 0
10x = -25
x = - 2,5
4) x² - (x+1)² = 0
x² - x² - 2x - 1 = 0
- 2x = 1
x = 0,5
5) x² - (x+4)² = 0
x² - x² - 8x - 16 =0
- 8x = 16
x = -2