Advertisements
Advertisements
प्रश्न
From the formula B = 2a2 – b2, calculate the value of B when a = 3 and b = − 1.
योग
Advertisements
उत्तर
B = 2a2 – b2
Put the values of a = 3 and b = − 1 in above equation
B = 2 × (3)2 – (− 1)2
B = 18 – 1
B = 17
Value of B is = 17
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
APPEARS IN
संबंधित प्रश्न
Find the value of the following expression, when x = −1:
2x2 − x − 2
Simplify the expression and find its value when a = 5 and b = −3.
2 (a2 + ab) + 3 − ab
If a = – 10, evaluate:
5a
If x = – 6, evaluate:
2x3
If m = – 7, evaluate:
2m3
If y = 5 and z = 2, evaluate:
100yz
If m = 3 and n = 7, evaluate:
5mn2
If p = − 10, evaluate:
3p2 – 20p
Find T, if T = 2a – b, a = 7 and b = 3.
Evaluate \[a^2+2ab+b^2\] when a = 3 and b = 2.
