1) (x - y)²
2) 2 * 5a * 7b
3) (x - 5)² = x² - 10x + 25
4) (4x⁵ + 7y³)² = (4x⁵)² + 2 * 4x⁵ * 7y³ + (7y³)² = 16x¹⁰ + 56x⁵y³ + 49y⁶
5) (y - 6)² - y(y - 8) = y² - 12y + 36 - y² + 8y = 36 - 4y
6) (2x + 1)² - 4x² = 7
4x² + 4x + 1 - 4x² = 7
4x = 7 - 1
4x = 6
x = 1,5
<span>а) y=5x-1</span>
<span> x+3y=5 </span>
<span>у=5х+1</span>
<span>х+15х-3=5</span>
<span>у=5х+1</span>
<span>16х=8</span>
<span>у=5х+1</span>
<span>х=0,5</span>
<span>у=2,5-1</span>
<span>у=1,5</span>
<span>Ответ: (0,5;1,5)</span>
<span>б) 4x+y=3/*2</span>
<span> 6x-2y=1</span>
<span> 8х+2у=6</span>
<span>+</span>
<span> <u>6х-2у=1</u></span>
14х=7
х=0,5
2+у=3
у=1
Ответ: (0,5;1)
Ставь лучшим!)))
Я думаю, что так можно сделать