Question

Subtract these polynomials.

(4x2 - 2x + 7) - (x2 + 3x - 4) =

Answer 1

Subtract terms with like variables (4x^2-2x^2) (-2x-3x) (7-(-4)) then combine

Answer 2

3x2 - 5x + 3

Answer 3

you should know these too:
\[\LARGE (-)\cdot (-)=(+)\]
\[\LARGE (+)\cdot (+)=(+)\]
\[\LARGE (+)\cdot (-)=(-)\]
\[\LARGE (-)\cdot (+)=(-)\]

Answer 4

Check your answer... 4-2 = ? and (7-(-4)) would be equal to 7+4 as kreshnik said