Simplify Algebraic Expressions

Simplify by combining like terms:
5a + 2b - 3a + 4

• 8a + 2b + 4
• 2a + 2b + 4
• 8ab
• 4ab + 4

Simplify the expression: 2x + 1 + 7x 

• 10x
• 10
• 9x + 1
• 9 + 1x

simplify n -10 +9n -3=

• -3

• 9n-3

• n

• 10n -13

7x²-5x+3-2x²-2x-1

• 5x²-7x+2
• 9x²-3x+4
• 5x²+7x+2
• 6x²+2

10x²+9x-5+3x²-8x-7

• 13x²+17x+12
• 14x²-12
• 13x²+x-12
• 2x²

-9x²+12x-15+4x²-7x+10

• -5x²+5x-5
• 5x²+5x+23
• 3x²-3x-5
• -10x²-5

x²+12-9x-6x²+11x-4

• -5x²+2x+8
• -6x²+2x+8
• 7x²+20x+16
• -3x²+8

Rewrite the expression by combining like terms.
5x² + 5y + 2x² + 4y² – 4x² + 2y² - 4y

• 3x² + 3xy + 6y
• 6y² + 2xy + 2x
• 7x² + 35x
• 3x² + 6y² + y

Simplify: 2y + 3y² + 13y + 5y²

• 15y + 8y²

• 23y³

• 18y²

• 12y + 2y²

Simplify: 12x + 8x² - 11x²

• 12x - 3x²

• 9x²

• 20x² - 11x

• 11x - 3x²