Advertisements
Advertisements
Question
Expand: `("y" - 3/"y")^2`
Sum
Advertisements
Solution
`("y" - 3/"y")^2`
Using the identity (a - b)2 = a2 - 2ab + b2
= `"y"^2 - 2 xx "y" xx 3/"y" + (3/"y")^2`
`= "y"^2 - 6 + 9/"y"^2`
shaalaa.com
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
Simplify (a2 − b2)2
Using identities, evaluate 992
Using a2 − b2 = (a + b) (a − b), find 512 − 492
Using a2 − b2 = (a + b) (a − b), find (1.02)2 − (0.98)2
Use the formula to find the value.
54 × 46
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
2x3 + 24x2 + 72x
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
`9x^2 + 2xy + y^2/9`
Factorise the following.
y2 + 18x + 65
Factorise the following.
y2 + 7y + 12
The height of a triangle is x4 + y4 and its base is 14xy. Find the area of the triangle.
