What should be subtracted from x³ – 2x² + 4x + 1 to get 1?

Question

What should be subtracted from x³ – 2x² + 4x + 1 to get 1?

Question

(a) x³ – 2x² + 4x
(b) x³ – 2x² + 4 + 1
(c) -1
(d) 1

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Class 10 Maths Priyanka QNA 3 years 2021-12-26T07:46:10+00:00 2021-12-26T07:46:10+00:00 1 Answer 15 views Enlightened 0

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Priyanka QNA Enlightened · Answer 1 · 2021-12-26T07:46:55+00:00

Answer: (a) x³ – 2x² + 4x
Explanation:
Without x, it is impossible to find the
answer, but it can be simplified to:
x∧3−2x∧2+4x+1−y=1
Step 1: Add -x^3 to both sides.
x3−2×2+4∧x−y+1+−x3=1+−x∧3
−2x∧2+4x−y+1=−x∧3+1
Add 2x^2 to both sides.
−2x∧2+4x−y+1+2×2=−x3+1+2x∧2
4x−y+1=−x∧3+2x∧2+1
Add -4x to both sides.
4x−y+1+−4x=−x∧3+2x∧2+1+−4x
−y+1=−x∧3+2x∧2−4x+1
Add -1 to both sides.
−y+1+−1=−x3+2×2−4x+1+−1
−y=−x∧3+2x∧2−4x

Divide both sides by -1.
y=x3−2×2+4x

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What should be subtracted from x³ – 2x² + 4x + 1 to get 1?