3x(x-5)-7 x=1, x=2 substitute and explain step by step
Answers
Answered by
1
Answer:
3 (2-5)-7
3(-3)-7
-9-7
- 16
Answered by
2
Step-by-step explanation:
3x(x - 5) - 7
3x² - 15x - 7
put x = 1
3(1)² - 15(1) - 7
3 - 15 - 7
3 - 22
-19
put x = 2
3(2)² - 15(2) - 7
3(4) - 30 - 7
12 - 30 - 7
12 - 37
- 25
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