SOLUTION: which one is correct? {{{10x^2*10x^7=10x^9}}} or {{{10x^2*10x^7=100x^9}}}

SOLUTION: which one is correct? {{{10x^210x^7=10x^9}}} or {{{10x^210x^7=100x^9}}}

Question 282385: which one is correct?

or

Found 3 solutions by richwmiller, edjones, Alan3354:
Answer by richwmiller(17219)   (Show Source): You can put this solution on YOUR website!
10x^2*10x^7=100x^9
we have 10*10*x^2*x^7
so we have 100*x^9

Answer by edjones(8007)   (Show Source): You can put this solution on YOUR website!
the 1st
Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!

=
----------------
if x = 2:
10x^2 = 40
10x^7 = 1280
40*1280 = 51200
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100*2^9 = 51200
----------------
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If x = 1:
10x^2 = 10
10x^7 = 10
10*10 = 100
-----------
100*1^9 = 100

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