Adding, Subtracting, and Multiplying Monomials

Simplify the expression: 2x + 1 + 7x 

• 10x

• 10

• 9x + 1

• 9 + 1x

Simplify: 10m²n + 7mn² - m²n

• 9m²n + 7mn²

• 16m²n

• 17m²n - mn²

• No change

(d⁴)(d⁵)

• 2d⁴

• d⁹

• d²

• 2d

(2a)(6a²)

• 12a³

• 12a

• 2a²

• 6a³

(4x)(2x²)

• 8x

• 6x³

• 8x³

• 8x²

(-7y²)(5y⁴)

• -35y⁶

• -2y⁶

• -35y⁸

• -2y⁸

(-2x³)(-2x⁶)

• 4x⁹

• 4x¹⁸

• 4x⁻³

• -2x⁹

(3c²)(10c⁷)

• 13c⁹

• 30c⁵

• 30c⁹

• -30c⁹

7x – 5x

• 12x²

• 2x²

• 2x

• -2x

According to exponent rules, when we multiply monomials with same bases we _______ the exponents.

• add

• subtract

• multiply

• divide