Advertisements
Advertisements
Question
If x = − 5 and y = − 8, evaluate:
2xy2
Sum
Advertisements
Solution
2xy2
= 2 × x × y × y
= 2 × (− 5) × (− 8) × (− 8)
= − 10 × 64
= − 640
shaalaa.com
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
If m = 2, find the value of m − 2.
If a = 2, b = −2, find the value of a2 + b2.
When a = 0, b = −1, find the value of the given expression:
2a2 + b2 + 1
What should be the value of a if the value of 2x2 + x − a equals to 5, when x = 0?
If m = 2, evaluate:
15m2 – 10m
If a = – 10, evaluate:
5a
If x = 2 and y = 10, evaluate:
50xy2
If p = − 10, evaluate:
6p + 50
If m = 9 and n = − 2, evaluate 2m2n
The wages ₹ W of a man earning ₹ x per hour for t hours are given by the formula W = xt. Find his wages for working 40 hours at a rate of ₹ 39.45 per hour.
