use identity(X+8) (X-10 – InterviewSolution

1.

use identity(X+8) (X-10

Answer»

(x + a)(x + b) = x^2 + (a + b)x + ab(x + 8)(x - 10) = x^2 +(-8+ 10)x - 80 = x^2 - 2x - 80

use identity(x+8)(x-10)

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