(3-√2)(3-√2)/(3+√2)(3-√2)=(3-√2)²/(9-2)=(9-6√2+2)/2=(11-6√2)/2
А¹⁰·(а⁻³)⁴=а¹⁰а⁻¹²=а⁻²
(1/9)⁻²=9²=81
1)a^3+8=(a+2)(a^2-2a+4)
2)b^3-27=(b-3)(b^2+3b+9)
3)c^3-64=(c-4)(c^2+4c+16)
4)d^3+125=(d+5)(d^2-5d+25)
4ya/9=64x^2/15
4ya=576x^2/15
ya=144x^2/15
a=144x^2/15y