Math, asked by supandeep942, 8 months ago

o
$. If a - b = 0.9 and ab = 0.36; find :
(i) a + b
(ii) a- - 62.​

Answers

Answered by aryan073
2

Step-by-step explanation:

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Q)) a-b=0.9

ab=0.36

(1) <font color="blue">

As we know that ,

(A-B) ²=(A+B)²-4(AB)

(0.9)²=(A+B)²-4(0.36)

0.81=(A+B)²-1.44

0.81-(A+B)²+1.44=0

(A+B)²=1.44+0.81

(A+B)²=2.25

(A+B)=±1.5

a+b=1.5

(2) a-(-62)

a+62

a+b=1.5

a-b=9

2a=10.5

a=5.25

put the value in this equation

a-(-62)=a+62=5.25+62=67.25

Answered by ItzDeadDeal
1

Answer:

As we know that ,

(A-B) ²=(A+B)²-4(AB)

(0.9)²=(A+B)²-4(0.36)

0.81=(A+B)²-1.44

0.81-(A+B)²+1.44=0

(A+B)²=1.44+0.81

(A+B)²=2.25

(A+B)=±1.5

a+b=1.5

(2) a-(-62)

a+62

a+b=1.5

a-b=9

2a=10.5

a=5.25

put the value in this equation

a-(-62)=a+62=5.25+62=67.25

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