which of the following is linear equation
a.2x²+y³-z=0
b.4x+6=9
c.xy+yz+zx=0
d.x²=9
Answers
Answer:
(d) x^2=9
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Answer:
1. Which of the following is not a quadratic equation
(a) x² + 3x – 5 = 0
(b) x² + x3 + 2 = 0
(c) 3 + x + x² = 0
(d) x² – 9 = 0
Answer/Explanation
Answer: b
Explaination:Reason:
Since it has degree 3.
2. The quadratic equation has degree
(a) 0
(b) 1
(c) 2
(d) 3
Answer/Explanation
Answer: c
Explaination:Reason:
A quadratic equation has degree 2.
3. The cubic equation has degree
(a) 1
(b) 2
(c) 3
(d) 4
Answer/Explanation
Answer: c
Explaination:Reason:
A cubic equation has degree 3.
4. A bi-quadratic equation has degree
(a) 1
(b) 2
(c) 3
(d) 4
Answer/Explanation
Answer: d
Explaination:Reason:
A bi-quadratic equation has degree 4.
5. The polynomial equation x (x + 1) + 8 = (x + 2) {x – 2) is
(a) linear equation
(b) quadratic equation
(c) cubic equation
(d) bi-quadratic equation
Answer/Explanation
Answer: a
Explaination:Reason:
We have x(x + 1) + 8 = (x + 2) (x – 2)
⇒ x² + x + 8 = x² – 4
⇒ x² + x + 8- x² + 4 = 0
⇒ x + 12 = 0, which is a linear equation.
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