4 years ago

Robin thinks that 4x+5x2 is the same as 9x3. Which statement shows that it is NOT the same?

2 answers:

6 0

You can substitute numbers in for x to prove it is not true:

4x+5x² and 9x³

Using 3 for x,
4(3)+5(3²) and 9(3³)
12+5(9) and 9(27)
12+45 and 243
57 and 243

These are obviously not the same.

Algebraically speaking, they do not go together because x³ is multiplying; we did not multiply x² and x, we added them.

Bingel [31]4 years ago

5 0

Answer:

4(2)+5(2)*2#9(2)*3

Step-by-step explanation:

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