क्या निम्नलिखित में से बहुपद है: 3x^2 + 2x - 5?

बहुपद प्रश्नोत्तरी

Quiz
•
Mathematics
•
9th Grade
•
Hard
Raj Kumar
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
No
Maybe
Sometimes
Yes
Answer explanation
हाँ, 3x^2 + 2x - 5 एक बहुपद है क्योंकि यह तीन अद्यतन हैं: x^2, x, और संख्या -5 का समावेश करता है।
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
दो बहुपदों को जोड़ें: (4x^2 + 3x + 7) + (2x^2 - 5x + 1)
2x^2 - 2x + 8
8x^2 - 2x + 8
6x^2 - 8x + 8
6x^2 - 2x + 8
Answer explanation
To add the two polynomials, combine like terms: (4x^2 + 3x + 7) + (2x^2 - 5x + 1) = 4x^2 + 2x^2 + 3x - 5x + 7 + 1 = 6x^2 - 2x + 8. Therefore, the correct choice is 6x^2 - 2x + 8.
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
क्या निम्नलिखित में से बहुपद है: 2x^3 + 5x^2 - 3x + 1?
Maybe
Yes
Sometimes
No
Answer explanation
हाँ, दिया गया व्यंजक बहुपद है क्योंकि इसमें x के विभिन्न घातांक हैं।
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
दो बहुपदों को घटाएं: (6x^3 + 4x^2 - x) - (3x^3 - 2x^2 + 5)
3x^3 + 6x^2 - 6
3x^3 + 2x^2 - 6
3x^3 + 6x^2 - 5
6x^3 + 4x^2 - 5
Answer explanation
To subtract the two polynomials, combine like terms: (6x^3 + 4x^2 - x) - (3x^3 - 2x^2 + 5) = 6x^3 + 4x^2 - x - 3x^3 + 2x^2 - 5 = 3x^3 + 6x^2 - 6
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
बहुपद f(x) = x^2 - 4x + 4 का ग्राफ कैसा होगा?
वृत्त
सीधा रेखा
नीचे की ओर खिसका हुआ पराबोला
ऊपर की ओर खिसका हुआ पराबोला
Answer explanation
नीचे की ओर खिसका हुआ पराबोला क्योंकि यह बहुपद का आकार x^2 है और उसका आधार -4x है, जो नकारात्मक है।
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
क्या निम्नलिखित में से बहुपद है: 5x^4 - 3x^2 + 2?
No
Yes
Sometimes
Maybe
Answer explanation
हाँ, यह बहुपद है क्योंकि इसमें x के दो से अधिक पावर हैं।
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
दो बहुपदों को जोड़ें: (3x^4 + 2x^3 - x^2) + (4x^3 - 2x^2 + x)
3x^4 + 6x^3 - 3x^2 - x
3x^4 + 6x^3 - 3x^2 + 2x
3x^4 + 6x^3 - 3x^2 + x
3x^4 + 6x^3 - 3x^2 - 2x
Answer explanation
To add the two polynomials, combine like terms: (3x^4 + 2x^3 - x^2) + (4x^3 - 2x^2 + x) = 3x^4 + 6x^3 - 3x^2 + x
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