8m-8d+am-ad= (8m+am)-(8d-ad)=m(8a)+d(8a)= (m+d)(8a)
1.
<span><u>3)2,5 </u></span>
2.
ответ: 4
3.<span>1) 3с¹⁵d⁶
5.ответ:35
6.х=-8
7.</span>
<span>1) 3m
</span>
2.<span>4а²- 4а+1=(а-0.5)²=(2.5-0.5)²=2²=4</span>
0,3⁻³ + (3/7)⁻¹ + (-0,5)⁻² * 3/4 + (-1)⁻⁸ * 6 =
= 1/(0,3)³ +(7/3)¹ + 1/(-0,5)² * 3/4 + 1/(-1)⁸ * 6 =
= (10/3)³ + 7/3 + (-10/5)² * 3/4 + 1 * 6 =
= 1000/27 + 7/3 + 100/25 * 3/4 + 6 =
= 1000/27 + 63/27 + 3 + 6 =
= 1063/27 + 9 =
= 39 10/27 + 9 = 48 10/27