Question

(√8 -3)(3+2√2)
Помогите решить пример

Answer 1

$(sqrt8-3)(3+2sqrt2)=3sqrt8-9+2sqrt2bulletsqrt8-6sqrt2=\\=3sqrt{2^2bullet2}-9+2sqrt{2bullet8}-6sqrt2=3bullet2sqrt2-9+2sqrt{16}-6sqrt2=\\=6sqrt2-9+2bullet4-6sqrt2=-9+8=-1.$