Question

the roots of the quadratic equation is x ^ 2 + 5x - 14 = 0 is
1. x = - 7 ; x = 2
2. x = - 4 : x = 3
3. x = - 9; x = 1
4. x = - 9; x = 5
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Answer 1

Answer:

x²+5x-14

x²+7x-2x-14

x(x+7)-2(x+7)

(x+7)(x-2)

x+7 = 0

x = -7

x-2 = 0

x = 2

1 is correct answer

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