Math, asked by sanjaykohata, 8 months ago

If a2 + b2 = 13 and ab = 6, find (i) a + b (1) U
If a + b = 4 and ab = -12, find (i) a - b (ii) a2 - b2.​

Answers

Answered by sayangayan4976
1

Given,

a + b = 5 and a

2

+b

2

=13

On squaring a + b = 5 both sides, we get

(a+b)

2

=(5)

2

a

2

+b

2

+2ab=25

13+2ab=25⇒2ab=25−13=12

⇒ab=12/2=6

∴ab=6

please marks me Brainlyst

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