A. -2x^2 + 5x^2 + 7x^2 B. -a^2b + (-4a^2b) +5a^2b C. 3x^2y + x^2y + (-4x^2y) D. an + 3ab + (-3ab) + (-ba)

Question

Matematika Diposting : 2017-09-28 Diupdate : 2017-09-28 muhammadsadeli

Pertanyaan

A. -2x^2 + 5x^2 + 7x^2
B. -a^2b + (-4a^2b) +5a^2b
C. 3x^2y + x^2y + (-4x^2y)
D. an + 3ab + (-3ab) + (-ba)

Answer 1

A. -2x^2 + 5x^2 + 7x^2 =
(-2x x -2x) + (5x x 5x) + (7x x 7x)=
4x + 25x + 49x =
29x + 49x =
78x
B.-
C.-
D.-

maaf b, c & d tidak bisa menjawab