Question

Hello I have 2 problem easy point the first check it for me plz the second I am stuck can you plz help thank you very much god bless

Answer 1

Answer:

1. 6 x^2 - 28 x + 30

2. (x-6) (x+3)

b  cannot see

4a    20 x^3 - 10x^2  ft^3

b  160 ft^3

Step-by-step explanation:

1. (2x-6) * (3x-5) =

6x^2 -18x-10x+30

6 x^2 - 28 x + 30  excellent job

2.  x^-3x-18

what numbers multiply together to give -18 and add together to give -3

-1* 18  = -18     -1+18 = 17

-2 * 9 = -18    - 2 + 9 = 7

-3 * 6 = 18     -3 + 6 = 3

-6 * 3 = -18    -6 + 3 = -3

(x-6) (x+3)   excellent

I cannot check part b because it is cut off

4. V = l * w * h

 V = (8x-4) * x * 2.5x

(8x-4) * 2.5x^2

20 x^3 - 10x^2

if x=2

V = 20 (2)^3 - 10 (2)^2

V = 20*8 - 10*4

V = 160 - 40

V = 120  ft^3