Question

a2+b2=25 and ab=12, find a+b and a-b​

Answer 1

Answer: a²+b²=25  and ab=12

identity-(x+y)²=x²+y²+2xy

(a+b)²=a²+b²+2ab

(a+b)²=25+2*12

(a+b)²=25+24=49

a+b=√49 =7

Hope it helps you! :-)

Answer 2

Step-by-step explanation:

a²+b²=25

(a+b)²-2ab=25

(a+b)²-2•12=25

(a+b)²-24=25

(a+b)²=49

(a+b)=7

a²+b²=25

(a-b)²+2ab=25

(a-b)²+2•12=25

(a-b)²+24=25

(a-b)²=1

(a-b)=1

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