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Algebra

kadin
kadin asked
on
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Last Modified: 2012-05-11
The book answer is -2692.228. What mistake did I make? Thanks.

9.1(17.43+7.2(8.6-4.1^2*3.1))
                          -4.1^2=16.81
9.1(17.43+7.2(8.6+16.81*3.1))
9.1(17.43+7.2(8.6+52.111))
9.1(17.43+7.2(60.711))
9.1(17.43+437.1192)
9.1(454.5492)
4136.39772
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a_b
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Commented:
I thought a neg times a neg is a pos?
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I learn something every day. Thanks.
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Commented:
"I learn something every day"
Would that were true of everybody
ozo
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Commented:
whether
-x^2
means
-(x^2)
or
(-x)^2
is another place where there is more than one standard.
but in this particular case
(8.6(-4.1)^2*3.1)
would not make sense since you would then lose the operator after the 8.6
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