Answer:
Step-by-step explanation:
so just plug in C and D , Rose
3*C - 2D
where C = [tex]k^{2}[/tex]+10k +10 and D = k +5
3([tex]k^{2}[/tex]+10k +10 ) - [2*(k +5)]
3[tex]k^{2}[/tex]+30k +30 - (2k +10)
3[tex]k^{2}[/tex]+30k +30 - 2k -10
3[tex]k^{2}[/tex]+28k +20
There you go :)
