Mathematics, 11.02.2020 06:19, pinklavalamp

(x + 5)(x + 4) = x2 + 5x + 4x + 20 = x2 + 9x + 20

Answers: 2

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(x + 5)(x + 4) = x2 + 5x + 4x + 20 = x2 + 9x + 20...