<span>1) </span><span> x17 </span><span>× x23 = x40</span>
<span>2) </span><span> (x8)3 = x24</span>
<span>3) </span><span> (x2)5 = x10</span>
<span>4) </span><span> x24 × x5 × x10 =
x39</span>
<span>5) </span><span> x = x40 / x39 = 104</span>
Ответ:
Объяснение:
7x-(2y-(4y+(3y-5x)))= 7x-(2y-(4y+3y-5x)= 7x-(2y-(7y-5x))=
=7x-(2y-7y+5x)= 7x-(-5y+5x)= 7x+5y-5x= 2x+5y
1). 4a^2b^2+4ab+1=(2ab+1)^2; 2). 1-xy+x^2y^2/4=(1-xy/2)^2.