Question

(x+4)²-(x-5)²=9 solve the equation ​

Answer 1

Answer:

x=1

Step-by-step explanation:

(x+4)²-(x-5)²=9

(x+4+x-5)-(x+4-(x-5))=9 (a²-b²)= (a+b)(a -b)

(2x-1)-(9)=9

18x-9=9

18x= 18

x=1

Answer 2

Answer:

(x^2+8x+16) -(x^2-10x+25) =9=>(x^2+8x+16-x^2+10x-20) =9=>18x-4=9=>18x=14=>x=14/18=7/9