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September 14, 2014

Homework Help: algebra check please

Posted by sara on Monday, March 12, 2007 at 8:29pm.

a=-2 b=5 c=-4 d=6

question is
b^2-2bc+c^2

see if i did the steps right please

(5^2)-(2*5*-4)+(-4^2)
(5^2)-(10*-4)+(-4^2)
(5^2)-(-40)+(-4^2)
5^2-(-40)-4^2
25-(-40)-4^2
25+40-4^2
25+40-16
65-16
49

No. Minus four squred is positive sixteen.

eighty percent of 280 is what number?
draw a diagram of the problem

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