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26-01-2022
Mathematics

contestada

Simplify.

(x−3)(x2−4x−7)

x3+x2−5x−21

x3−3x2+12x+21

x3−7x2+19x+21

x3−7x2+5x+21

Respuesta :

ts264800 ts264800

26-01-2022

Answer:

c.

Step-by-step explanation:

(x-3)(x²-4x-7)=x(x²-4x-7)-3(x²-4x-7)=x³-4x²-7x-3x²+12x+21=

=x³+(-4x²-3x²)+(-7x+12x)+21=x³-7x²+5x+24

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