May be to your discussion.

7. here's how mo solved the subtraction problem

635 - 813:

635

- 813

- 222

mo did this by working from right to left, saying

5 – 3 = 2

3 - 1 = 2

6 - 8 = -2

a. is mo's answer right?

b. solve

6(100) + 3(10) + 5(1)

- [8(100) + 1(10) + 3(1)]

by working with expanded forms. discuss how

mo's work compares with your work in expanded

forms.

answer is 8x+24

area of vanessa's patio = length × width

given, length = (3x² + 5x + 10)

width = (x² - 3x - 1)

area of vanessa's patio = (3x² + 5x + 10)(x² - 3x - 1)

= 3x²(x² - 3x - 1) + 5x(x² - 3x - 1) + 10(x² - 3x - 1)

= 3x⁴ - 9x³ - 3x² + 5x³ - 15x² - 5x + 10x² - 30x - 10

= 3x⁴ - 4x³ - 8x² - 35x - 10

hence, expression of vanessa's patio = (3x⁴ - 4x³ - 8x² - 35x - 10)

explanation:

previous steps have made pa≅ pb ≅ st ≅ su. setting the compass width to ab allows you to make tu the same length. then δstu ≅ δpab by the sss congruence postulate, and ∠p ≅ ∠s by the reason cpctc.

answer: need a picture

step-by-step explanation: