devon18 devon18

15-11-2016
Mathematics

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The value of b is 7, then what is the value of the expression -3b^2+25=

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ewolfe98 ewolfe98

15-11-2016

The answer is -122
Exponents first and if b is 7 it would be 7 X 7 which equals 49 and then you multiply 49 with -3 which would be -147. Then you add 25 to -147 which is -122

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