Simplify:1. Xsq -3x+5-1/2 (3xsq -5x+7) 2. [5-3x+2y-(2x-y)]-(3x-7y+9)
Answers
Answered by
2
1) x² - 3x +5 - 1/2(3x² - 5x +7)
= x² - 3x +5 - 3/2x² +5x - 7
= - 1/2x² +2x - 2
2) [5 - 3x +2y - (2x - y)] - (3x - 7y +9)
= [ 5 - 3x +2y - 2x + y] - 3x +7y - 9
= 5 - 5x + 3y - 3x +7y - 9
= - 8x +2y - 4
= x² - 3x +5 - 3/2x² +5x - 7
= - 1/2x² +2x - 2
2) [5 - 3x +2y - (2x - y)] - (3x - 7y +9)
= [ 5 - 3x +2y - 2x + y] - 3x +7y - 9
= 5 - 5x + 3y - 3x +7y - 9
= - 8x +2y - 4
Anonymous:
hope it helps
plz mark as best
hope it helps
Thanks
Please last ok
Xcube y(xsq-2x)+2xy(Xcube X4)
ok but cant understand the question please message me and please make more clear question
please ask the question in the online mode
Similar questions