Homework Help: ALGEBRA 1

Posted by Lisa on Sunday, December 25, 2011 at 5:35pm.

ARE THESE ANSWERS RIGHT ?

Express as a trinomial:
(2x-3)(x+7)
IS THE ASNWER 2x^2 + 11x - 21

WHAT IS THE VALUE OF 2 times 5^-2
IS THE ANSWER 2/25

DIVIDE:
x/x^2-49 divide by 5x^3/x^2 + 9x + 14

IS THE ANSWER x+2/5x^2(x-7)

help check please - Lisa, Sunday, December 25, 2011 at 6:27pm
PLEASE CHECK THESE ANSWERS
ALGEBRA 1 - Henry, Sunday, December 25, 2011 at 6:42pm
1. Correct.

2. Correct.

3. Correct! Good job!!
ALGEBRA 1 - TRACY, Sunday, December 25, 2011 at 6:43pm
thanks
ALGEBRA 1 - drwls, Monday, December 26, 2011 at 5:50am
x/(x^2-49) divided by 5x^3/(x^2 + 9x + 14)
= [x/(x^2-49])*[(x^2 + 9x + 14)/5x^3]
= x/[(x+7)(x-7)]*[(x+7)(x+2)/5x^2]
= (x+2)/[5x^2*(x-7)]

Yes, #3 is correct. Your #2 requires parentheses. One of the ambiguous versions is correct.

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