Multiply and simplify: (5x – 3)(3x2 – 2x – 4)

A. 15x3 –19x2 – 26x – 12
B. 15x3 + x2 – 26x + 12
C. 15x3 + x2 – 14x + 12
D. 15x3 – 19x2 – 14x + 12

Question

Multiply and simplify: (5x – 3)(3x2 – 2x – 4) 

   A. 15x3 –19x2 – 26x – 12 
   B. 15x3 + x2 – 26x + 12 
   C. 15x3 + x2 – 14x + 12 
   D. 15x3 – 19x2 – 14x + 12

anonymous · Answer

$$5x(3x^2 - 2x-4) -3(3x^2 - 2x -4)$$

Distribute it and solve to get the answer...

anonymous · Answer

15x^3 -2 -4 -3 right ? @waterineyes

anonymous · Answer

then -3 x 3x^2 -2 -4 ?

anonymous · Answer

Where you have made a mistake??

anonymous · Answer

15x^3-10x^2-20x-9x^2+6x+12
then simplify.

anonymous · Answer

$$15x^3 -10x^2 - 20x - 9x^2 +6x +12$$

anonymous · Answer

A ?

anonymous · Answer

D

anonymous · Answer

because -20x+6x=-14x, not -26x

anonymous · Answer

Now add the x squared terms and subtract the x terms you will get your answer..