Answers:
1. 20/3
2. -1
3. -23/10
Step-by-step explanation:
1. substitute the values of x by 4
5(4) / 3(4) - 9
= 20 / 12-9
= 20/3
2. substitute the value of x by -2
(-2)²+4(-2)+1 / (-2)²-1
= 4-8+1 / 3
= -3 / 3
= -1
3. substitute the value of x by -3
(-3)³-4(-3)²+2(-3) / (-3)²-5(-3)+6
= -27-36-6 / 9+15+6
= -69 / 30
= -23 / 10 (lowest term)
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Answers & Comments
Answers:
1. 20/3
2. -1
3. -23/10
Step-by-step explanation:
1. substitute the values of x by 4
5(4) / 3(4) - 9
= 20 / 12-9
= 20/3
2. substitute the value of x by -2
(-2)²+4(-2)+1 / (-2)²-1
= 4-8+1 / 3
= -3 / 3
= -1
3. substitute the value of x by -3
(-3)³-4(-3)²+2(-3) / (-3)²-5(-3)+6
= -27-36-6 / 9+15+6
= -69 / 30
= -23 / 10 (lowest term)