<span>1.Упростите выражение:</span>
<span><span>А) 7ах^</span><span>5</span><span>·(-2а^</span><span>4</span><span>х);</span></span>
<span><span>Б) (5а^</span><span>3</span><span>в)^</span><span>2</span><span>.</span></span>
<span>2. Упростите выражение:</span>
<span><span>(2х-1)^</span><span>2</span><span>+(2х-1)(2х+1).</span></span>
<span>3. Разложите на множители:</span>
<span><span>А) в^</span><span>2</span><span>с-9с;</span></span>
<span><span>Б) 2а^</span><span>2</span><span>+12а+18;</span></span>
<span><span>В) х-у-2х^</span><span>2</span><span>+2у^</span><span>2</span><span>.</span></span>
<span>4. Решите уравнение:</span>
<span>А) 3-4(1-6х)=2(3х+4);</span>
<span>Б) (х+2)/3 -4х=8;</span>
<span><span>В) 3х^</span><span>2</span><span>+4х=0.</span></span>