find a=u b = 10 a²+b²+20+b = 20 + c
Answers
Answered by
0
Answer:
a² + b² = 60
(a - b)² = 20
Solution :-
i) Finding a² + b²
We know that
(a + b)² = a² + b² + 2ab
Here
• a + b = 10
• ab = 20
By substituting the values
⇒ (10)² = a² + b² + 2(20)
⇒ 100 = a² + b² + 40
⇒ 100 - 40 = a² + b²
⇒ a² + b² = 60
ii) Finding (a - b)²
We know that
(a + b)² = (a - b)² + 4ab
Here
• a + b = 10
• ab = 20
By substituting the values
⇒ (10)² = (a - b)² + 4(20)
⇒ 100 = (a - b)² + 80
⇒ 100 - 80 = (a - b)²
⇒ 20 = (a - b)²
⇒ (a - b)² = 20
Answered by
0
Answer:
u+a²+b²+20+b=20+c
a²+b²+b+u-c =20-20
a²+b²+b+u-c =0
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