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Adding and subtracting polynomials: 5b^3-8b+2b^2 and....
- Thread starter zhyia
- Start date
I don't understand the " b^297b " part. Add some spaces and parentheses.zhyia said:5b^3-8b+2b^2 and 3b^297b^3+5b
5b^3-8b+2b^2
3b^297b^3+5b
=-2b^3+5b^2-3b
Yes!zhyia said:8d-(-7c-2d) = 8d+7c+2d = 7c+10d
Steve
zhyia said:sorry is should have been 5b^3-8b+2b^2 and 3b^2-7b^3+5b
5b^3-8b+2b^2
3b^2-7b^3+5b
=-2b^3+5b^2-3b
That's correct (if you're supposed to add them).
Steve