Advertisements
Advertisements
Question
Use a suitable identity to get the following products.
(1.1m − 0.4) (1.1 m + 0.4)
Advertisements
Solution
The products will be as follow
(1.1m − 0.4) (1.1 m + 0.4)
= (1.1m)2 − (0.4)2 [(a + b) (a − b) = a2 − b2]
= 1.21m2 − 0.16
APPEARS IN
RELATED QUESTIONS
Use a suitable identity to get the following products.
(a2 + b2) (− a2 + b2)
Use a suitable identity to get the following products.
(6x − 7) (6x + 7)
Expand `("x"+1/2)^2`
Use the formula to find the value.
54 × 46
Expand: (51)2
The difference of the squares of two consecutive numbers is their sum.
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.
4x4 + 12x3 + 9x2
If a2 + b2 = 74 and ab = 35, then find a + b.
Verify the following:
(5x + 8)2 – 160x = (5x – 8)2
