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AnilSinghBora
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Use suitable identities to find the following products:(ii) (x+8)(x –10) Q.1(2)

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I don’t know how to solve the question of class 9th ncert of Polynomials chapter of exercise 2.5 of math, give me the best and easy way for solving this chapter in easy and simple way  Use suitable identities to find the following products:(ii) (x+8)(x –10)

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  1. Using the identity, (x+a)(x+b) = x 2+(a+b)x+ab

    [Here, a = 8 and b = −10]

    We get,

    (x+8)(x−10) = x2+(8+(−10))x+(8×(−10))

    = x2+(8−10)x–80

    = x2−2x−80

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