hay9tass5ybebb hay9tass5ybebb

29-09-2016
Mathematics

Answered

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

Verified Answer :

Anonymous Anonymous

29-09-2016

(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

Answer: C. x³-7x²+5x+24

Answer Link

Hussain514 Hussain514

30-09-2016

(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

Answer Link

Related Questions

which of these lines from the Canterbury tales prologue best exemplifies a franklin

PLEASE HELP ME I BEG YOU I REALLY NEED

What is the meaning of look deeper into nature and then you will understand everything better

If your business operates in more than one state or in a large area its a good idea to register the trademark with what organization

which two stones are considered to be the most popular stones used in Egyptian jewelry

Occurs when people experience unpleasant stressors

How would you answer cuando es la navidad

what is the solution to 3 6x 15

One half minus seven eighths

cards numbered 1 through 15 are mixed up and placed in a bag Malik chooses one of the cards without looking what is the probability that malik chooses a card wi

Web Analytics Made Easy - Statcounter