please answer this question itsits urgent please step by step explanation and I write this answer in my examination so you can understand I catch my marks so the answer of this question as -11 x + 31I don't know this method so please can you help me
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Step-by-step explanation:
let the number to be added be k
(x+7)(x-3)+k=(x-5)(x-2)
⇒(x²+7x-3x-21)+k=(x²-5x-2x+10)
⇒k=-7x-4x+10+21
⇒k= -11x+31
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