Select the correct answer. Which expression is equivalent to this polynomial expression?
(2x^5+3y^4)(-4x^2+9y4)

-8x^ +18x^5y4 + -12x^2y^4 + 27y^8

Step-by-step explanation:

(2x^5+3y^4)(-4x^2+9y4)

= -8x^ +18x^5y4 + -12x^2y^4 + 27y^8

(2x^5+3y^4)(-4x^2+9y4) = -8x^ +18x^5y4 + -12x^2y^4 + 27y^8

The correct answer is B

1) c 2143.6 cm

2) c 113.0 m

3) a 33.5 ft

4)   d 2 cm

5) c 20 mm

6) 180 in

7) d 120 ft

50-38=12

step-by-step explanation: