Adding and subtracting polynomials

Simplify the expression

(4x² - 6x - 8) + (3x² - 2x - 9)

• x² - 4x + 1

• 7x² - 8x - 17

• 12x² + 12x + 72

• 7x⁴ - 8x² - 17

1. Find the sum.

(2x² + 5x - 7) + ( 3 - 4x² + 6x)

• 2x² + 3x +1

• -2x² - 11x -4

• 2x²+ 5x -7

• -2x² + 11x -4

Simplify.

 (4x - 2x³) + (5x³ - 4x + 5)

• 3x³ + 5
• 3x³ + 8x + 5
• 3x² + 5
• 7x³ + 8x + 5

Simplify the expression.

(4a3 - 8a - 4a2) + (7a3 - 7 - 6a)

• 5a3 - 4a2 - 20a - 7

• 11a3 - 4a2 - 14a - 7

• 5a3 - 9a2 - 20a - 7

• 5a3 - 4a2 - 14a - 7

Which expression is equivalent to (10+7r+r²) + (-6r²-18+5r)?

• -7r²+2r+8

• 7r²+12r+8

• -r²+12r-8

• 7r²+2r-8

Simplify: (-4x⁴ + 14 + 3x²) + (-3x⁴ - 14x² - 8) 

Mathematical Equivalence

ON

Simplify the expression by adding the trinomials.

(4a³ - 8a - 4a²) + (7a³ - 7 - 6a)

• 11a³ - 4a² - 14a - 7

• 5a³ - 4a² - 14a - 7

• 5a³ - 4a² - 20a - 7

• 5a³ - 9a² - 20a - 7

 $(5p^2-3)+(2p^2-3p^3)$  

•  $-3p^3+7p^2-3$  

•  $-6p^3+7p^2$  

•  $3p^3+3p^2+3$  

•  $2p^3+3p^2-3$  

(3x⁴ - 8) + (6 - 7x³ + 9x⁴)

• 12x⁴ - 7x³ + 14
• 6x⁴ - 7x³ + 2
• 12x⁴ - 7x³ - 2
• 12x⁴ + 7x³ - 14