Advertisements
Advertisements
Question
If y = − 8, evaluate:
y2 + 12y
Sum
Solution
y2 + 12y
= (y × y) + (12 × y)
= ((− 8) × (− 8)) + (12 × (− 8))
= 64 + (− 96)
= −32
shaalaa.com
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
Find the value of the following expression, when x = −1:
2x2 − x − 2
If x = 4, evaluate:
x2 – 2x
If m = 2, evaluate:
16m – 7
If a = – 10, evaluate:
5a
If a = – 10, evaluate:
a2
If x = – 6, evaluate:
11x
If x = – 6, evaluate:
2x3
If x = 2 and y = 10, evaluate:
5y2
If x = 2 and y = − 4, evaluate:
(5y)2
From the formula B = 2a2 – b2, calculate the value of B when a = 3 and b = − 1.