Элементарно Ватсон ))
8=2^3, 16=2^4
1) 8^(3,4)=2^(10,2)
2) 16^(2,3)=2^(9,2)
3) 2^(10.2)/2^(9,2)=2^(10,2-9,2)=2^(1)=2
<span>Ответ : 2</span>
<span>1) (2х-3)(5х+1)-(х-6)(x+6)+13х=0</span>
<span>10x^2 + 2x- 15x- 3- x^2 + 36 + 13x =0</span>
<span>9x^2 +33 =0</span>
<span>9x^2=-33</span>
<span>3x^2=-11</span>
<span>2) <span>(2х-7)2-7(7-4х)=0</span></span>
8x-14-49+28x=0
<span>32x=63</span>
<span> <span>x=63/32</span></span>
<span><span>x=одна целая 31/32</span></span>
<span><span>3)<span>(х-5)2+5(2х-1)=0</span></span></span>
<span><span><span>2x-10+10x-5=0</span></span></span>
12x=15
4x=5
x=5/4
x=одна целая 1/4
А) и б) - да
в) - нет
а) 0,05<0,5
б) 0,49<0,5
в) 0,9>0,5