(a+b)=7 nd ab=10 find the vakue of a-b
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Hey mate!☺
Here's your answer....!
(a+b)^2 = a^2+b^2+2ab
7^2 = a^2+b^2+2*10
49-20 = a^2+b^2
a^2+b^2 = 29
(a-b)^2 = a^2+b^2-2ab
(a-b)^2 = 29-2*10
(a-b)^2 = 29-20
a-b = √9
a-b = 3
Hope this helps...!☺❤
Here's your answer....!
(a+b)^2 = a^2+b^2+2ab
7^2 = a^2+b^2+2*10
49-20 = a^2+b^2
a^2+b^2 = 29
(a-b)^2 = a^2+b^2-2ab
(a-b)^2 = 29-2*10
(a-b)^2 = 29-20
a-b = √9
a-b = 3
Hope this helps...!☺❤
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