Kindly tell me this. It is a question of maths.
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Your answer ❤ :
( x + 4 )² - ( x - 5 ) ² = 9
[ x² + 8x + 16 ] - [ x² - 10x + 25 ] = 9
x² + 8x + 16 - x² + 10x - 25 = 9
18x - 9 = 9
18x = 9 + 9
18x = 18
x = 18/18
x = 1
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( x + 4 )² - ( x - 5 ) ² = 9
[ x² + 8x + 16 ] - [ x² - 10x + 25 ] = 9
x² + 8x + 16 - x² + 10x - 25 = 9
18x - 9 = 9
18x = 9 + 9
18x = 18
x = 18/18
x = 1
✔✔✔✔✔✔✔
BrainlyHulk:
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