Question

Frank thinks that 2x + 3x^2 is the same as 5x^3. Which statement shows that it is NOT the same?
A. 2x+3^2=5x^2
B. 2(6)x3(6)^2not equal to 5(6)^3
C. 2x +3x not equal to 5x
D. 2(4) +3(4)^2 not equal to 5 (4)^3

Answer 1

I believe the answer is D. If you work it out, 
2(4) + 3(4)^2 doesn't equal 5(4)^3 because 
8 + 3*(16)----- 5 * (64)
8 + 48------- 320
56 doesn't equal 320. 

A doesn't disprove anything, B changes the original equation from adding to multiplying, and C is incorrect, 2x + 3x does equal 5x.

D is the correct answer. 

Answer 2

Answer:

I got this right, I hope it helps

Step-by-step explanation: