Mathematics: Simplify. (x – 3)(x2 – 4x – 7) a. x3 – 3x2 + 12x + 21 b. x3 – 7x2 + 19x + 21 c. x3 – 7x2 + 5x + 21 d. x3 + x2 – 5x – 21

Simplify. (x – 3)(x2 – 4x – 7) a. x3 – 3x2 + 12x - id3247332124455203, valoiserika1229

Ответ:

chocolate1294

14.01.2022

(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+21
C is right answer
hope this helps

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Ответ:

ilizzy1224

14.01.2022

Mathematics

(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

C. x³-7x²+5x+24

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Ответ:

jameslinimk

25.03.2020

Mathematics

1+1=2

Step-by-step explanation:

I hope it's helpful for you

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Simplify.
(x – 3)(x2 – 4x – 7)

a.
x3 – 3x2 + 12x + 21

b.
x3 – 7x2 + 19x + 21

c.
x3 – 7x2 + 5x + 21

d.
x3 + x2 – 5x – 21

Ответ:

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