Math, asked by sp41974, 3 days ago

3. If a + b = 12 and a-b²=96. What is the value of a? (a) 2 (6) 4 (c)8 (d)10​

Answers

Answered by mdkashibaliansari
1

Step-by-step explanation:

Correct option is A)

Formula,

(a+b+c)2=a2+b2+c2+2ab+2bc+2ca

⇒(a+b+c)2=a2+b2+c2+2(ab+bc+ca)

Given,

ab+bc+ca=10,a2+b2+c2=16

⇒(a+b+c)2=16+2(10)

a+b+c=16+20=6

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