Advertisements
Advertisements
प्रश्न
Evaluate: `(1/2 "a" + 1/2 "b") (1/2 "a" - 1/2 "b")`
योग
Advertisements
उत्तर
`(1/2 "a" + 1/2 "b") (1/2 "a" - 1/2 "b")`
`= 1/"2a" (1/2 "a" - 1/2"b") + 1/2"b"(1/2"a" - 1/2"b")`
`= 1/4 "a"^2 - 1/4"ab" + 1/4 "ab" - 1/4 "b"^2`
`= 1/4 "a"^2 - 1/4 "b"^2`
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
APPEARS IN
संबंधित प्रश्न
Factorize x3 - 2x2 y + 3xy2 - 6y3
Factorize (x + 2)(x2 + 25) -10x2 - 20x
Factorize (a - b + c)2 + (b - c + a)2 + 2(a - b + c) (b - c + a)
Factorize `21x^2 - 2x + 1/21`
Factorize the following expressions:
1029 – 3x3
Factorize 8a3 + 27b3 + 36a2b + 54ab2
`2sqrt2a^3 + 16sqrt2b^3 + c^3 - 12abc`
If x2 + y2 = 29 and xy = 2, find the value of x + y.
Write the coefficient of x2 and x in the following polynomials
`sqrt(3)x^2 + sqrt(2)x + 0.5`
When y = –1, the value of the expression 2y – 1 is 3
