Question

The sum of two number is 7 and their product is 12 . find the numbers.

Answer 1

Answer:

Let the first no. be x and the second no. be (7-x).

According to question,

x × (7-x) = 12

7x - ×^2 = 12

x^2 - 7x +12 = 12

x^2 - 4x - 3x + 12 = 12

x(x - 4) - 3(x + 4) = 12

(x-3)(x-4) = 12

x = 3 or x = 4

Hence, the first number is 3 and the second number is 4.

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