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Answer:
-12; 5
Step-by-step explanation:
x^2 + 7x - 60 = 0
D = b^2 - 4ac
D = 7 * 7 + 60 * 4 * 1 = 289
sqrt(D) = sqrt(289) = 17
x₁ = (-b - √D) / 2a = (-7 - 17) / 2 = -24 / 2 = -12
x₂ = (-b + √D) / 2a = (-7 + 17) / 2 = 10 / 2 = 5