Advertisements
Advertisements
Question
Simplify: (5a + 5b – c) (2b – 3c)
Sum
Solution
(5a + 5b - c) (2b - 3c)
= 5a (2b - 3c) + 5b (2b - 3c) - c (2b - 3c)
= 10ab - 15ac + 10b(1+1) - 15bc - 2bc + 3c(1+1)
= 10ab - 15ac + 10b2 - 17bc + 3c2
Hence, (5a + 5b - c) (2b - 3c)
= 10ab - 15ac + 10b2 - 17bc + 3c2
shaalaa.com
Multiplying a Polynomial by a Polynomial
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
Multiply: 6x3 − 5x + 10 by 4 − 3x2
Multiply: 2y − 4y3 + 6y5 by y2 + y − 3
Simplify : (px – q) (px + q)
The base and the altitude of a triangle are (3x – 4y) and (6x + 5y) respectively. Find its area.
Evaluate: (2x – 5y)(2x + 3y) for x = 2 and y = 3.
Evaluate: xz (x2 + y2) for x = 2, y = 1 and z= 1.
Evaluate: x(x – 5) + 2 for x = 1.
Multiply and then verify :
−3x2y2 and (x – 2y) for x = 1 and y = 2.
Multiply: (ab – 1) (3 – 2ab)
Simplify : (5 – x) (6 – 5x) (2 -x).
