Question

Упростите выражение (х+3)(х-3)-(х-4)^2 Помогите прошу

Answer 1

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Answer 2

( x+3)(x-3) - (x-4)^2 = x^2 - 9 - ( x^2 - 8x + 16) = x^2 - 9 - x^2 + 8x - 16 =

= 8x - 25