Advertisements
Advertisements
Question
Expand.
(3x + 4y − 5p)2
Sum
Solution
It is known that,
(a + b + c)2 = a2 + b2 + c2 + 2ab + 2bc + 2ca
(3x + 4y − 5p)2
= (3x)2 + (4y)2 + (−5p)2 + 2(3x)(4y) + 2(4y)(−5p) + 2(−5p)(3x)
= 9x2 + 16y2 + 25p2 + 24xy − 40yp − 30px
shaalaa.com
Is there an error in this question or solution?
RELATED QUESTIONS
Simplify.
(2a + b)3 − (2a − b)3
Simplify.
(4a − 3)3 − (4a + 3)3
Simplify.
(5x − 7y)3 + (5x + 7y)3
Expand.
(2p + q +5)2
Expand.
(m + 2n + 3r)2
Simplify.
(x − 2y +3)2 + (x + 2y − 3)2
Simplify.
(3k − 4r − 2m)2 − (3k + 4r − 2m)2
Simplify.
(7a − 6b + 5c)2 + (7a + 6b − 5c)2
Expand: (p + q + 3)2
Simplify: (l + 2m + n)2 + (l - 2m + n)2.
