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Class 10 ·
The Quadratic Formula
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y = ax² + bx + c
x = −b/2a
√(b²−4ac) / 2a
up to 3 real roots
The formula isn't magic —
−b/2a
is the axis of symmetry, and each root sits
√(b²−4ac)/2a
away on either side.
The
discriminant b²−4ac
decides how many roots exist.
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Maths, Physics, Chemistry, Biology — Class 9-10 CBSE
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