4x²-5x+9 where x=-1/2
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Answered by
62
Answer:
1+5/2+9
12.5
Step-by-step explanation:
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Answered by
0
Answer:
4x² - 5x + 9
when x = - 1/2
= 4 × ( - 1/2)² - 5 × -1/2 + 9
= 4 × 1/4 + 5/2 + 9
= 1 + 9 + 5/2
= 10 + 5/2
= 20 + 5/2
= 25/2
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