Advertisements
Advertisements
प्रश्न
Use the direct method to evaluate :
(2a+3) (2a−3)
योग
Advertisements
उत्तर
Note: (a+b) (a−b) = a2 − b2
(2a+3) (2a−3) = (2a)2 − (3)2
= 4a2 − 9
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
APPEARS IN
संबंधित प्रश्न
Factorise the following:
27 – 125a3 – 135a + 225a2
Simplify the following
`(7.83 + 7.83 - 1.17 xx 1.17)/6.66`
If `x^2 + 1/x^2 = 66`, find the value of `x - 1/x`
If \[x + \frac{1}{x} = 5\], find the value of \[x^3 + \frac{1}{x^3}\]
If \[x^4 + \frac{1}{x^4} = 119\] , find the value of \[x^3 - \frac{1}{x^3}\]
If a + b = 8 and ab = 6, find the value of a3 + b3
Expand the following:
(x - 5) (x - 4)
Expand the following:
(2x - 5) (2x + 5) (2x- 3)
Simplify by using formula :
(2x + 3y) (2x - 3y)
If `"p" + (1)/"p" = 6`; find : `"p"^4 + (1)/"p"^4`
