Ответ:
ab-3a+4b-12 x2+7x-3x-21 5x2-15x+2x-6
(a+4)(b-3) = ab-3a+4b-12
(x-3)(x+7) = +7x-3x-21 = +4x-21
(5x+2)(x-3) = -15x+2x-6 = -13x-6
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Ответ:
ab-3a+4b-12 x2+7x-3x-21 5x2-15x+2x-6
Ответ:
(a+4)(b-3) = ab-3a+4b-12
(x-3)(x+7) = +7x-3x-21 = +4x-21
(5x+2)(x-3) = -15x+2x-6 = -13x-6