Question

10. (3x + 5)2 - (3x - 5)2​

Answer 1

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 ✌✌

Answer 2

Hopefully it helps 2 u ✌️ is