Advertisements
Advertisements
प्रश्न
Simplify: (5a + 5b – c) (2b – 3c)
Advertisements
उत्तर
(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
APPEARS IN
संबंधित प्रश्न
Multiply:
5p2 + 25pq + 4q2 by 2p2 − 2pq +3q2
Simplify : (7x – 8) (3x + 2)
The adjacent sides of a rectangle are x2 – 4xy + 7y2 and x3 – 5xy2. Find its area.
Multiply -4xy3 and 6x2y and verify your result for x = 2 and y= 1.
Evaluate (x5) × (3x2) × (-2x) for x = 1.
If x = 2 and y = 1; find the value of (−4x2y3) × (−5x2y5).
Evaluate: (2x – 5y)(2x + 3y) for x = 2 and y = 3.
Evaluate: xz (x2 + y2) for x = 2, y = 1 and z= 1.
Multiply and then verify :
−3x2y2 and (x – 2y) for x = 1 and y = 2.
Multiply: (ab – 1) (3 – 2ab)
