Question

13.) 13y² + 9y + 4y² - 31y

Answer 1

Answer:

Collect like terms to simplify:

13)

• 13y² + 9y + 4y² - 31y =
• (13 + 4)y² + (9 - 31)y =
• 17y² - 22y

14)

• 10m²n + 7mn² - m²n =
• (10 - 1)m²n + 7mn² =
• 9m²n + 7mn²

15)

• 16y² +( -5y²) =
• (16 - 5)y² =
• 11y²

16)

• 10x²y - 2x²y =
• (10 - 2)x²y =
• 8x²y

Answer 2

#13

$\\ \rm\longmapsto 13y^2+9y+4y^2-31y$

$\\ \rm\longmapsto 13y^2+4y^2+9y-31y$

$\\ \rm\longmapsto 17y^2-22y$

#14

$\\ \rm\longmapsto 10m^2n+7mn^2-m^2n$

$\\ \rm\longmapsto 10m^2n-m^2n+7mn^2$

$\\ \rm\longmapsto 9m^2n+7mn^2$

#15

$\\ \rm\longmapsto 16y^2-5y^2$

$\\ \rm\longmapsto 11y^2$

#16

$\\ \rm\longmapsto 10x^2y-2x^2y$

$\\ \rm\longmapsto 8x^2y$