Solve {l}{A=-4a^2-6b^2}{B=15ab+5a^2}

$$\left. \begin{array} { l } { A = - 4 a ^ { 2 } - 6 b ^ { 2 } } \\ { B = 15 a b + 5 a ^ { 2 } } \end{array} \right.$$

Solve for A, a, b, B (complex solution)

$$A=2\left(-2a^{2}-3b^{2}\right)$$

$$a\in \mathrm{C}$$

$$b\in \mathrm{C}$$

$$B=5a\left(a+3b\right)$$

Solve for A, a, b, B

$$A=2\left(-2a^{2}-3b^{2}\right)$$

$$a\in \mathrm{R}$$

$$b\in \mathrm{R}$$

$$B=5a\left(a+3b\right)$$