-4а²-в, при а=-3,в=-2
-4·(-3)²-(-2)=-4·9+1=-35
(4+√7) / (√7+1)²=(4+√7)/(7+2√7+1)=(4+√7)/(8+2√7)=<span>(4+√7)/2(4+√7)=1/2</span>
2^2x-14*2^x - 32=0
4x-14*2x-32
<span>x=14*2x+32/4= 14*2x/4+32/4= 3,5*2x+32/4= 3,5*2x+8</span>
3с(с+2)-(с+3)^2=3€^2+6€)-(€^2+6€+9)=2с^2-9
2*0,5*0,5 -9= 2*0,25-9=-0,4