(x+4)² - (x-5)² =9 plz solve this.....
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Answered by
46
(x² + 8x+16)-(x²-10x +25 )=9
18x+41=9
18x=9-41
x=32/18
x=16/9
18x+41=9
18x=9-41
x=32/18
x=16/9
Answered by
51
Heya user☺☺
Given that,
(x+4)^2 - (x-5)^2 =9
using the identity,
a^2 - b^2 = (a+b)(a-b), we get
(2x-1)(9) = 9
2x-1 = 1
so, x = 2/2
x = 1
Hope this will help you ☺☺☺
Given that,
(x+4)^2 - (x-5)^2 =9
using the identity,
a^2 - b^2 = (a+b)(a-b), we get
(2x-1)(9) = 9
2x-1 = 1
so, x = 2/2
x = 1
Hope this will help you ☺☺☺
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