Area & Surface Area:Question 3 Mr. Beck is making a box pattern using 4 rectangular pieces of wood that are the
same size and 2 square pieces of wood of equal size as shown.
10 cm
10 cm
10 cm
25 cm
What is the surface area of the box that will be formed?
Help please

1200

Step-by-step explanation:

You find the are of one of the rectangles which is 25×10=250

There are 4 of the same size so we are at 1000

Then we do the squares on the side 10×10=100

There are 2 of the squares so we add 200

The answer is 1200

- 2 + 10x³ - 21x² + 19x - 4

step-by-step explanation:

each term in the second factor is multiplied by each term in the first factor

x²(- 2x² + 4x - 1) - 3x(- 2x² + 4x - 1) + 4(- 2x² + 4x - 1) ← distribute

= - 2 + 4x³ - x² + 6x³ - 12x² + 3x -8x² + 16x - 4

collect like terms

= - 2 + 10x³ - 21x² + 19x - 4 ← in standard form