10. (3x + 5)2 - (3x - 5)2
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using identity (a + b) 2= a2 + 2ab + b2
( a-b) = a2 - 2ab + b2
now your solution mate,
(3x + 5)2 -( 3x -5)2
(9x2 + 2* 3x * 5 + 25) - ( 9x2 - 2*3x*5 + 25)
9x2 + 30x +25 - 9x2 +30x -25
60x = 0
x = -60 Is your answer mate
hope it's help ✌✌
Answered by
8
Hopefully it helps 2 u ✌️ is
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