Simplifying With Exponents

What should happen to the exponents in this expression?

(-4r⁵)(2r⁸)

• add them

• subtract them

• multiply them

• divide them

When a number or a variable has a negative exponent, for example x⁻⁶, what is the proper way to write it?

• put the negative sign in front of the x, for example -x6

• add

• subtract

• multiply

• divide

• b⁶

• b⁷

• b¹

• b⁻⁶

What does 3^-3 simplify to?

• -9

• -27

• 1/27

• 1/-27

• −30x¹¹

• −30x¹⁸

• −x¹¹

• −x¹⁸

Simplify

(2m⁴)(5m²)

• 10m⁶

• 10m⁸

• 7m⁶

• 7m⁸

Simplify 5x⁴y+2x⁴y

• 10x⁸y²

• 7x⁸y²

• 7x⁴y

• 10x¹⁶y

Simplify -3x⁴+8x⁴

• -11x⁸

• -24x⁸

• 5x⁴

• -24x¹⁶