How do u do the problem 3x·(7·x) simplified?

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H Dev Share
Mar 7, 2018

Answer:

#21x^2#

Explanation:

I am understanding the expression #3x \times 7x#. The steps below are for simplifying that expression.

Multiply the coefficients together - meaning 3 and 7 - and you should get 21.

Multiply #x# by #x#, and it should be #x^2#.

Put 21 and #x^2# together to get #21x^2#.

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Write your answer here...
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Then teach the underlying concepts
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Answer

Write a one sentence answer...

Answer:

Explanation

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I want someone to double check my answer

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1
Mar 7, 2018

Answer:

#21 x^2 #

Explanation:

You simply multiply #3x# to all what is inside the parentheses. Luckily, you have here just #7x#.

Another example,

#2x * (5x + 4x) = 10x^2 + 8x^2 = 18x^2#

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