Question

Is a^2+10a+16 is a trinomial square. How?​

Answer 1

let a be x

${x}^{2} + 10x + 16 = 0 \\ x {}^{2} + 8x + 2x + 16 = 0 \\ x(x + 8) + 2(x + 8) = 0 \\ (x + 2)(x + 8) = 0 \\ x = - 2 \\ x = - 8$