Advertisements
Advertisements
प्रश्न
Factorise the following using suitable identity
y2 + 20y + 100
Advertisements
उत्तर
y2 + 20y + 100 = y2 + (2 × (10))y + (10 × 10)
= y2 + (2 × 10 × y) + 102
This is of the form of identity
a2 + 2ab + b2 = (a + b)2
y2 + (2 × 10 × y) + 102 = (y + 10)2
y2 + 20y + 100 = (y + 10)2
y2 + 20y + 100 = (y + 10)(y + 10)
APPEARS IN
संबंधित प्रश्न
Use a suitable identity to get the following products.
`(3a - 1/2)(3a - 1/2)`
Use a suitable identity to get the following products.
`(x/2 + (3y)/4)(x/2 + (3y)/4)`
Using identities, evaluate 992
Using a2 − b2 = (a + b) (a − b), find 512 − 492
Using (x + a) (x + b) = x2 + (a + b) x + ab, find 9.7 × 9.8
Use an expansion formula to find the value.
(997)2
Expand the following square, using suitable identities
(mn + 3p)2
Factorise the following using suitable identity
36m2 + 60m + 25
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
4x2 + 12x + 9
