Question

how to solve((x+4)^2-(x-5)^2=9

Answer 1

(x + 4)² - (x - 5)² = 9

Expanding each bracket using ( a + b )² = a² + 2ab + b²

(x² + 8x + 16) - (x² - 10x + 25) = 9

x² + 8x + 16 - x² + 10x - 25 = 9

18x - 9 = 9

18x = 18

x = 1

Answer 2

Answer:

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Step-by-step explanation:

1.