Question

Quadratic function

I need help writing quadratic functions the zeroes are 3 and -10​

Answer 1

у = x² + 7x - 30

Explanation:

x₁ = 3 and x₂ = -10

Use the formula (x - x₁)(x - x₂) = 0

(x - 3)(x - (-10)) = 0

(x - 3)(x + 10) = 0

x² + 10x - 3x - 30 = 0

x² + 7x - 30 = 0