what must be added to 5x3-2x2+6x+7 to make the sum x3+3x2-x+1
Answers
Answered by
6
Step-by-step explanation:
Let x be the second number,
(5x³-2x²+6x+7) + x = x³+3x²-x+1
5x³-2x²+6x+7 + 2x = x³+3x²+1
4x³- 5x² + 8x + 6 = 0
Answered by
1
Answer:
the answer is 4x3-5x2+7x+8.
Step-by-step explanation:
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