(English Medium) ICSE Class 9 - CISCE Question Bank Solutions for Mathematics

If `"a"  + 1/"a" = 6;`find `"a"^2 - 1/"a"^2`

If `"a"  - 1/"a" = 10;` find `"a"  + 1/"a"`

If `"a"  - 1/"a" = 10`; find `"a"^2 - 1/"a"^2`

If `x + (1)/x = 3`; find `x^2 + (1)/x^2`

If `x + (1)/x = 3`; find `x^4 + (1)/x^4`

If p + q = 8 and p - q = 4, find:
pq

If p + q = 8 and p - q = 4, find:
p² + q²

If m - n = 0.9 and mn = 0.36, find:
m + n

If m - n = 0.9 and mn = 0.36, find:
m² - n².

If x + y = 1 and xy = -12; find:
x - y

If x + y = 1 and xy = -12; find:
x² - y².

If `"a"^2 - 7"a" + 1` = 0 and a = ≠ 0, find :

`"a"  + (1)/"a"`

If `"a"^2 - 7"a" + 1` = 0 and a = ≠ 0, find :

`"a"^2 + (1)/"a"^2`

If a² - 3a - 1 = 0 and a ≠ 0, find : `"a"  - (1)/"a"`

If a² - 3a - 1 = 0 and a ≠ 0, find : `"a"  + (1)/"a"`

If a² - 3a - 1 = 0 and a ≠ 0, find : `"a"^2 - (1)/"a"^2`

If 2x + 3y = 10 and xy = 5; find the value of 4x² + 9y²

If x + y + z = 12 and xy + yz + zx = 27; find x² + y² + z².

If a² + b² + c² = 41 and a + b + c = 9; find ab + bc + ca.

If p² + q² + r² = 82 and pq + qr + pr = 18; find p + q + r.