Question

(8-y)(8+y)-(y^2+4)
ПОМОГИТЕ, БУДУ БЛАГОДАРНА))

Answer 1

(8-y)(8+y)-($y^{2}$+4)= 64-$y^{2}$-$y^{2}$-4=60-$2y^{2}$

2$y^{2}$=-60

$y^{2}=30\\y=+/-\sqrt{30}$