t+6,4=27,6⇒t=27,6-6,4=21,2.
Ответ: 21,2.
а¹⁰ b¹⁷ : a⁸ b¹⁶ =
= a¹⁰⁻⁸ * b¹⁷⁻¹ =
= а²b¹ = а²b,
при а = 3 1/2, b = 4/7:
(3 1/2)² * 4/7 = (7/2)² * 4/7 = 49/4 * 4/7 = 49/7 = 7
<span>1)a^2-2ab+b²=(a-b)²
2)1-2m+m²=(1-m)²
3)49-28a+4a²=(7-2a)²
4)m^2+12m+36
=(m+6)²</span>