solve the quadratic equation
x²+ 7 x - 2 = 0
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Answer:
a=1,b=+7,c=+12
x=
2a
−b±
b
2
−4ac
x=
2×1
−(+7)±
7
2
−4×1×12
x=
2
−7±
49−48
x=
2
−7±1
x=
2
−7+1
or x=
2
−7−1
x=−3 or x=−4
Step-by-step explanation:
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