Mathematical Rules
√a × √b = √(a×b) and k√a × m√b = (k×m)√(a×b)
√a ÷ √b = √(a÷b) and k√a ÷ m√b = (k÷m)√(a÷b)
Like radicals (same radicand) can be added: k√a + m√a = (k+m)√a
Exponent multiplication: aᵐ × aⁿ = aᵐ⁺ⁿ
Exponent division: aᵐ ÷ aⁿ = aᵐ⁻ⁿ
Power of a power: (aᵐ)ⁿ = aᵐⁿ
FOIL: (a+b)(c+d) = ac + ad + bc + bd
To solve √(ax+b)=c: Square both sides → ax+b=c² → x=(c²-b)/a