Algebra Calculator

Algebra & Mathematical Systems Calculator

Solve quadratic & polynomial roots, evaluate multi-variable linear systems via Cramer’s rule, and analyze exponential-logarithmic models

Polynomial Coefficients: a·x² + b·x + c = 0
Equation Roots / Solutions
x₁ = 3.000, x₂ = 2.000
Two Distinct Real Roots
Factored: (x – 3.000)(x – 2.000) = 0
Discriminant (Δ = b² – 4ac) 1.000 Δ > 0 (Two distinct real intersections)
Parabola Vertex (h, k) (2.500, -0.250) Axis of symmetry: x = 2.500
Vertex Form Representation y = (x – 2.500)² – 0.250 y = a(x – h)² + k
Vieta’s Properties (Sum & Product) Sum = 5.000 • Prod = 6.000 Sum = -b/a • Product = c/a
Equation 1: a₁·x + b₁·y = c₁
Equation 2: a₂·x + b₂·y = c₂
System Vector Solution
x = 1.000, y = 2.000
Consistent & Independent
Matrix Determinant (det A): -17.000
Primary System Determinant (D) -17.000 Non-zero ensures invertible matrix
Variable Determinant (Dx) -17.000 x = Dx / D = 1.000
Variable Determinant (Dy) -34.000 y = Dy / D = 2.000
Variable Determinant (Dz) N/A (2×2 System) Residual: |Ax – b| ≈ 0.000
Solved Exponent / Variable (x)
x = 4.000
Equation: 5.000 · 2^(1.000 · x) = 80.000
Natural Log Equivalent (ln) ln(C/A) = 2.773 Base-e Napierian logarithm
Common Log Equivalent (log₁₀) log₁₀(C/A) = 1.204 Standard base-10 decadic scale
Half-Life / Doubling Period T = 0.693 / k Time required for 2× or 0.5× factor
Continuous Equivalent Rate (r) +69.31% Effective instantaneous growth rate