Uploaded February 2020 | Updated September 2026, 2 weeks ago
If x =(2+√5)^1/2 + (2-√5)^1/2 and y = (2+√5)^1/2 - (2-√5)^1/2 then evaluate x^2+y^2.
If x =(2+root5)^1/2 + (2-root5)^1/2 and y = (2+root5)^1/2 - (2-root5)^1/2 then evaluate x^2+y^2.
class 9 important questions maths.
#class9maths #polynomialsbyavisir
Some other important questions and their links for class 9 are as follows:
Question:
Rationalise 1/√7+√6+√13:
youtu.be/01xMB90wmw0
Question:
Rationalise 1/√2+√3+√5
youtu.be/w7pAYux99PM
Question:
If both a and b are rational numbers, then find the values of a and b in each of the following cases
(i) if √5 + √3 / √5 - √3 = a + b√15
(ii) if √2 + √3 / 3√2 - 2√3 = a - b√6
youtu.be/DA5aGt-TUg4
Question :
Evaluate (√(3+2√2))
youtu.be/54w7bRP121E
Question :
Evaluate (√(5+2√6)) + (√(8-2√15))
youtu.be/LKZmuQD_Bik
Question :
if x=7+√40 find the value of √x+1/√x
youtu.be/0XtK8JjiUFk
Question :
If x=7-4√3 find the value of √x+1/√x
youtu.be/He3aJMUPMaU
Question:
If x= √p+2q +√p-2q / √p+2q - √p-2q then show that qx2-px+q=0
youtu.be/iHNY-_Ae2po
Question:
If x =(2+√5)^1/2 + (2-√5)^1/2 and y = (2+√5)^1/2 - (2-√5)^1/2 then evaluate x^2+y^2.
youtu.be/wJyqjprThQg
If x =(2+√5)^1/2 + (2-√5)^1/2 and y = (2+√5)^1/2 - (2-√5)^1/2 then evaluate x^2+y^2.
If x =(2+root5)^1/2 + (2-root5)^1/2 and y = (2+root5)^1/2 - (2-root5)^1/2 then evaluate x^2+y^2.
class 9 important questions maths.
#class9maths #polynomialsbyavisir
Some other important questions and their links for class 9 are as follows:
Question:
Rationalise 1/√7+√6+√13:
youtu.be/01xMB90wmw0
Question:
Rationalise 1/√2+√3+√5
youtu.be/w7pAYux99PM
Question:
If both a and b are rational numbers, then find the values of a and b in each of the following cases
(i) if √5 + √3 / √5 - √3 = a + b√15
(ii) if √2 + √3 / 3√2 - 2√3 = a - b√6
youtu.be/DA5aGt-TUg4
Question :
Evaluate (√(3+2√2))
youtu.be/54w7bRP121E
Question :
Evaluate (√(5+2√6)) + (√(8-2√15))
youtu.be/LKZmuQD_Bik
Question :
if x=7+√40 find the value of √x+1/√x
youtu.be/0XtK8JjiUFk
Question :
If x=7-4√3 find the value of √x+1/√x
youtu.be/He3aJMUPMaU
Question:
If x= √p+2q +√p-2q / √p+2q - √p-2q then show that qx2-px+q=0
youtu.be/iHNY-_Ae2po
Question:
If x =(2+√5)^1/2 + (2-√5)^1/2 and y = (2+√5)^1/2 - (2-√5)^1/2 then evaluate x^2+y^2.
youtu.be/wJyqjprThQg
![Solve for x | x^2+[a/(a+b)+(a+b)/a]x +1=0. Solve for x : x2+(a/a+b+a+b/a)x+1=0. Quadratic equation.](https://i.ytimg.com/vi/xFT2UofBnuA/mqdefault.jpg "Solve for x | x^2+[a/(a+b)+(a+b)/a]x +1=0. Solve for x : x2+(a/a+b+a+b/a)x+1=0. Quadratic equation.
Solve for x : x^2+[a/(a+b)+(a+b)/a]x +1=0. Solve for x : x2+(a/a+b+a+b/a)x+1=0. Quadratic equation. Quadratic equation important questions for class 10.
#quadraticequation #quadraticequationclass10 #quadraticequationclass10avijainclasses #quadraticequationbyavisir
The other important questions from this chapter are as follows:
1) Solve x^2-2ax+(a^2-b^2). Solve x^2+5x-(a^2+a-6). Solve 4x^2-4ax+(a^2-b^2). Solve 36x^2-12ax+(a^2-b^2). Quadratic equation important questions for class 10.
https://youtu.be/Khh6M1KLcsM
2) Solve 9x^2 - 9(a+b)x + (2a^2+5ab+2b^2).
https://youtu.be/2jgUJvjGhpg
3) Solve for x : 1/a+b+x =1/a+1/b+1/x. Quadratic equation important questions for class 10.
https://youtu.be/b2PC45UqSdU
4) Solve: x^2 +[a/(a+b) + (a+b)/a]x + 1 =0. Quadratic equation important questions for class 10.
https://youtu.be/xFT2UofBnuA
5) Solve for x :9^(x+2) - 6.3^(x+1) + 1 = 0. Quadratic equations class 10 maths important questions.
https://youtu.be/yQXwldUPc0c
6) Solve root (2x+9)+x=13. Solve root (6x+7)-(2x-7)=0. Quadratic equation class 10.
https://youtu.be/tEh761BYZ2Y
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