Advertisements
Advertisements
प्रश्न
Evalute : `( 7/8x + 4/5y)^2`
योग
Advertisements
उत्तर
`( 7/8x + 4/5y)^2`
We know that
( a + b )2 = a2 + 2ab + b2
∴ `( 7/8x + 4/5y)^2`
= `(7/8x)^2 + (4/5y)^2 + 2 xx 7/8x xx 4/5y`
= `(49x^2)/(64) + (16y^2)/25 + (7xy)/5`
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
APPEARS IN
संबंधित प्रश्न
Use suitable identity to find the following product:
(x + 4) (x + 10)
Expand the following, using suitable identity:
(–2x + 3y + 2z)2
Find the following product:
\[\left( \frac{3}{x} - 2 x^2 \right) \left( \frac{9}{x^2} + 4 x^4 - 6x \right)\]
If \[x + \frac{1}{x} = 2\], then \[x^3 + \frac{1}{x^3} =\]
Find the square of : 3a + 7b
Use the direct method to evaluate :
(ab+x2) (ab−x2)
If a2 - 3a - 1 = 0 and a ≠ 0, find : `"a" - (1)/"a"`
Evaluate the following :
7.16 x 7.16 + 2.16 x 7.16 + 2.16 x 2.16
Factorise the following:
9x2 + 4y2 + 16z2 + 12xy – 16yz – 24xz
Simplify (2x – 5y)3 – (2x + 5y)3.
