Question

a + b is equal to 7 and a x b is equal to 10 find a minus b

Answer 1

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Answer 2

•Question:-

If a + b is equals to 7 and a b is equals to 10 find a minus b.

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•Solution:-

a+b=7(Given)

ab=10

a-b=?

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As (a+b)²-(a-b)²=4ab

=>(7)²-(a-b)²=4×10

=>49-(a-b)²=40

=>49-40=(a-b)²

=>9=(a-b)²

=>√9=a-b

=>3=a-b

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Thus, a - b = 3.

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