Question

Tính A-(-B+C)

Answer 1

\(A-\left(-B+C\right)=A+B-C=7x^3-2x^2+4x+5\)

tick mik nha

Answer 2

\(A-\left(-B+C\right)\\ =A+B-C\\ =3x^3-x^2+5x+3-x^3+2x^2-13+5x^3-3x^2-x+2\\ =7x^3-2x^2+4x-12\)

Answer 3

Hoctot

Answer 4

Ta có: A-(-B+C)

=A+B-C

\(=3x^3-x^2+5x+3-x^3+2x^2-13+5x^3-3x^2-x+2\)

\(=7x^3-2x^2+4x-12\)