Question

Решите пожалуйста даю 18б

Answer 1

1.

a)V5(V10+V5)-5/2V8=

=(V50+V25)-V(25/4*8)=

V(25*2)+5 -V(25*2)=

=5V2+5-5V2=5

b)(V5-V2)=

=(V5)²-2V5*V2+(V2)²=  

=5-2V10+2=   7-2V10

2.

a)(36-a) /(6-Va)= (36-a)/(6-Va) * (6+Va)/(6+Va)= (36-a)(6+Va) /(36-a)=6+Va

b)(V5-V5)/(V15-V3)=(5-V5)/(V15-V3) *(V15+V3)/(V15+V3)=

=(5-V5)(V15+V3) / 15-3=(5V15+5V3-V5*15)-V(5*3) /8=

=(5V15+5V3-V75-V15)/8=4V15/4=V15/2

4.

4/(2V3+1)-4/2V3-1)=[4(2V3-1)-4(2V3+1)]/[(2V3)²-1²]=

=(8V3-4-8V3-4)/(12-1)= -8/11

5.

a)   V(-3,2)²=V10,24=3,2   b) Vx^6=(x^1/2)^6=x^3/2=Vx³

b)Vy^4=(y^1/2)^4=y²      

6.

a)2V3=V4*3=V12      b)aV2=V2a²    w)xV-3/x=V-3x²/x=V-3x