Question

If a - b = 4 and a + b = 6; find
(i) a2 + 62
(ii) ab


PLZ SEND ME SOLUTION
AND PLZ TELL WHY WE USE DIFFERENT FORMULA IN DIFFERENT SUMS​

Answer 1

Answer:

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Step-by-step explanation:

QUESTION ::

If a - b = 4 and a + b = 6; find

(i) a2 + b2

(ii) ab.

ANSWER ::

a - b = 4 and a + b = 6

On addition we get

2a = 10

a = 5

So b = 1

1. a ^2 + b^2 = 5^2 + 1^2 = 25 + 1 = 26
2. ab = 5 × 1 = 5

Answer 2

Step-by-step explanation:

a-b=4------------(1)

a+b=6-----------(2)

adding equation (1) and (2) :-

a+a+b-b=4+6

2a=10

a=5

a-b=4

5-b=4

5-4=b

b=1

To find:- (i) a²+b²  (ii) a×b

Solution:-

(i) (5)²+(1)²=25+1=26

(ii) (5)(1)=5

And at last, there is no such different formula used in solving this question as such...