Answer:
If M = 5x2 + 7x – 4 and N = -3x2 - 4x + 5, then M-N= [tex]8 x^{2}+11 x-9[/tex]
Step-by-step explanation:
Given:
[tex]M= 5 x^{2}+17 x-4[/tex]
[tex]N=-3 x^{2}-4 x+5[/tex]
To find:
M-N=?
Solution:
[tex]M-N=5 x^{2}+7 x-4-(-3 x 2-4 x+5)[/tex]
[tex]M-N=5 x^{2}+7 x-4+3 x^{2}+4 x-5[/tex]
Rearranging the above equation
[tex]M-N=5 x^{2}+3 x^{2}+7 x+4 x-4-5[/tex]
Now solving we get,
M-N=[tex]8 x^{2}+11 x-9[/tex]
