Question

Find the volume of the box. Use the formula V = lwh.




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A.


10x3 – 16


B.


10x3 – 27x2 – 32x + 16


C.


10x2 – 32x + 4


D.


10x3 + 27x2 – 48x + 16

Answer 1

can you multiply all 3 sides together? what do you get?

Answer 2

@kx2bay im not sure how to do that

Answer 3

can you do first this
(x+4)(5x-4) ?

Answer 4

what will u get for the above?

Answer 5

it turns into 5x^2+16x-16? @kx2bay

Answer 6

excellent!
now multiply that by (2x-1)
what do you get ? D?

Answer 7

5x2−16x+16?

Answer 8

@kx2bay

Answer 9

( 5x^2+16x-16 ) ( 2x - 1) = ?

Answer 10

d?

Answer 11

= 10x^3 + 32x^2 -32x -5x^2 -16x+ 16
= 10x^2 + 27x^2 -48x + 16
yes D

Answer 12

I think the main part here is: do you know how to multiply 3 terms by 2 terms?
like (x+y+z)(a+b) ?