Question

Use suitable identities to find the product
(ii) (x + 8) (x-10)​

Answer 1

Answer:

$(x + a)(x - b) = {x}^{2} + (a - b)x - ab$

$(ii) \: (x + 8)(x - 10) = {x}^{2} + (8 - 10)x - (8)(10) = {x}^{2} - 2x - 80$

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Answer 2

Answer:

(x+8) (x-10)

= x^2 - 10x + 8x - 80

= x^2 - 2x - 80

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