Advertisements
Advertisements
प्रश्न
If a – b = 6 and ab = 16, find a2 + b2
योग
Advertisements
उत्तर
(a − b)2 = a2 + b2 − 2ab
⇒ (6)2 = a2 + b2 − 2×16
⇒ 36 = a2 + b2 − 32
⇒ 36 + 32 = a2 + b2
⇒ 68 = a2 + b2
∴ a2 + b2 = 68
shaalaa.com
Application of Formulae
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
APPEARS IN
संबंधित प्रश्न
If a+b=5 and ab = 6, find a2 + b2
If a2 + b2 = 29 and ab = 10, find : a + b
If a2 + b2 = 29 and ab = 10, find : a − b
If a2 + b2= 10 and ab = 3; find : a – b
If a + b + c = 10 and a2 + b2 + c2 = 38, find : ab + bc + ca
If `2"x"-1/(2"x")=4`, find: `8"x"^3-1/(8"x"^3)`
If a2 + b2 = 41 and ab = 4, find : a – b
If 3x – 4y = 5 and xy = 3, find : 27x3 – 64y3.
If a + b = 8 and ab = 15, find a3 + b3.
If 5x – 4y = 7 and xy = 8, find : 125x3 – 64y3.
