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

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Answer 1 · 2018-03-07T00:45:05

#21 x^2 #

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#

Answer 2 · 2018-03-07T00:45:44

#21x^2#

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#.