Advertisements
Advertisements
Question
Evaluate: 2x(3x – 5) – 5(x – 2) – 18 for x = 2.
Sum
Solution
For x = 2
2x(3x – 5) – 5(x – 2) – 18
2 × 2(3 × 2 − 5) − 5(2 − 2) − 18
4(6 − 5) − 5 × 0 − 18
4 − 18
= − 14
shaalaa.com
Multiplying a Polynomial by a Polynomial
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
Multiply: 5p2 + 25pq + 4q2 by 2p2 − 2pq +3q2
Multiply -4xy3 and 6x2y and verify your result for x = 2 and y= 1.
Find the value of (3x3) × (-5xy2) × (2x2yz3) for x = 1, y = 2 and z = 3.
Evaluate (3x4y2) (2x2y3) for x = 1 and y = 2.
Evaluate (x5) × (3x2) × (-2x) for x = 1.
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).
