Advertisements
Advertisements
Question
Solve:
(3x + 2y)(7x − 8y)
Sum
Advertisements
Solution
(3x + 2y)(7x − 8y)
= 3x (7x − 8y) + 2y(7x − 8y)
= 21x2 − 24xy + 14xy − 16y2
= 21x2 − 10xy − 16y2
shaalaa.com
Is there an error in this question or solution?
RELATED QUESTIONS
Find each of the following product:
(2.3xy) × (0.1x) × (0.16)
Write down the product of −8x2y6 and −20xy. Verify the product for x = 2.5, y = 1.
xy(x3 − y3)
Find the following product: \[\frac{4}{3}a( a^2 + b^2 - 3 c^2 )\]
Find the product −3y(xy + y2) and find its value for x = 4 and y = 5.
Multiply \[- \frac{3}{2} x^2 y^3 by (2x - y)\] and verify the answer for x = 1 and y = 2.
Simplify: a(b − c) + b(c − a) + c(a − b)
Simplify: 4ab(a − b) − 6a2(b − b2) − 3b2(2a2 − a) + 2ab(b − a)
Simplify:
a2b2(a + 2b)(3a + b)
Simplify:
(x3 − 2x2 + 5x − 7)(2x − 3)
