(x+y+z)=9 மற்றும் (xy+yz+zx)=26 எனில் ((x^2+y^2+z^2 ) இன் மதிப்பைக் காண்க
Answers
Answered by
4
||✪✪ QUESTION ✪✪||
if x + y + z = 9 , and ,xy + yz + zx = 26 , than , find the value of x^2 + y^2 + z^2 = ?
|| ★★ FORMULA USED ★★ ||
- (a + b + c)² = a² + b² + c² + 2ab + 2bc + 2ca
|| ✰✰ ANSWER ✰✰ ||
→ (x + y + z) = 9
Squaring on both sides we get,
→ (x + y + z)² = 9²
Now, using above Told formula in LHS, we get,
→ x² + y² + z² + 2xy + 2yz + 2zx = 81
→ x² + y² + z² + 2(xy + yz + zx) = 81
Putting value of xy + yz + zx now,
→ x² + y² + z² + 2(26) = 81
→ x² + y² + z² = 81 - 52
→ x² + y² + z² = 29 (Ans).
Answered by
0
விளக்கம்:
கொடுக்கப்பட்டுள்ள மதிப்புகள்,
ஆகும்.
Similar questions
Math,
5 months ago
Computer Science,
5 months ago
Math,
10 months ago
Math,
10 months ago
English,
1 year ago