Advertisements
Advertisements
Question
Expand (3m + 5)2
Sum
Solution
(3m + 5)2
Comparing (3m + 5)2 with (a + b)2 we have a = 3m and b = 5
(a + b)2 = a2 + 2ab + b2
(3m + 5)2 = (3m)2 + 2(3m)(5) + 52
= 32m2 + 30m + 25
= 9m2 + 30m + 25
shaalaa.com
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
Using a2 − b2 = (a + b) (a − b), find 512 − 492
Expand `("x"+1/2)^2`
Expand: (2a – 3b)2
Expand: `("p"/3 + "q"/4)^2`
Use a formula to multiply of (2a – 13)(2a + 13)
If a + b = 10 and ab = 18, find the value of a2 + b2
Simplify: (a + b)2 + (a – b)2
(a + b)2 = a2 + b2
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
a2x2 + 2abx + b2
Find the length of the side of the given square if area of the square is 625 square units and then find the value of x.
