Question

2(x-3)(x+3)=1(x-4)(x+4)​

Answer 1

=>2(x-3)(x+3)=1(x-4)(x+4)

=>(a+b)(a-b)=a^2-b^2

=>2(x^2-3^2)=1(x^2-4^2)

=>2(x^2-9)=1(x^2-16)

=>2x^2-18=x^2-16

=>2x^2-x^2=-16+18

=>X^2=2

=>X=root2

Answer 2

2(x-3)(x+3)=1(x-4)(x+4)

=>2(x^2-3^2)=1(x^2-4^2)

=>2(x^2-9)=1(x^2-16)

=>2x^2-18=x^2-16

=>2x^2-x^2=-16+18

=>X^2=2

=>X=+- root 2 i.e plus or minus root 2

Hpe it hlps u

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