Answer :
In factorization, we write the middle term of the quadratic equation either as a sum of two numbers or difference of two numbers such that the equation can be factorized.
⇒ 6((x + 1)2 - (x – 1)2) = 5(x2 – 1)
⇒ 6 × 4x = 5x2 – 5
⇒ 5x2 – 24x – 5 = 0
⇒ 5x2 – 25x + x – 5 = 0
⇒ 5x(x – 5) + 1(x-5) = 0
⇒ (5x + 1)(x – 5) = 0
⇒ x = 5, -1/5
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