Question

a+ b=6 ,ab=11/4 find 2a2 +2b2
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Answer 1

Answer:

a+ b = 6

ab = 11/4

Step-by-step explanation:

ab =11/4

a =11/4b

a+b =6

11/4b + b= 6

11 +4b2/4b =6

11+4b2= 24b

4b2- 24b +11 =0

4b2 -22b - 2b +11=0

2b( 2b- 11) - 1 ( 2b+11) = 0

b = 1/ 2 or -11/2

Answer 2

Answer:

let a+b=6-----1

b=6-a

ab=11/4---2

2a²+2b²

2(a²+b²)

2(a²+(6-a)²)

2(a²+36+a²-12a)

2(2a²-12a+36)

4a²-24a+72=0

u solve this equation u will get ur answer

let a+b=6-----1

b=6-a

ab=11/4---2

hope it helps you.....