3. Write an equivalent expression in standard form for (5x – 4y) (7x2 – 12x + 27).
1 answer:
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Use this 3 following steps:
1)At first, we should find the roots :
3x+8=0 => x=-8/3
x-4=0 => x=4
2)Using a chart for the limits:
photo
3)choose your solution:
[-8/3,-4)==> Sentence 3 is correct
