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Mathematics 7 Online
OpenStudy (anonymous):

Evaluate -10 – x(-15 + 3x2) for x = -1. Please show all of your work.

OpenStudy (anonymous):

Simplify. Please show all of your work. 5a2 – 12b2 – 3(a2 – 10b2)

OpenStudy (anonymous):

if x=-1 then -10-(-1)(-15+6) -10+1(9) -10+10=0

OpenStudy (anonymous):

If you distribute 3 to the terms in the parentheses, you get \[5a^2 - 12b^2 -3a^2 +30b^2\] If you combine like terms, you get: \[2a^2 + 18b^2\]

OpenStudy (anonymous):

what about the other problem

OpenStudy (anonymous):

Ur good man outstanding

OpenStudy (anonymous):

what about this problem hold on

OpenStudy (anonymous):

Simplify. (-5v)4

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