zad 10 Oblicz wartość liczbową wyrażenia:
a)-y+8x-z-2x dla x=-2 y=6 z=-3
b)-8y-4z+x-y-2z+1 dla x=-0.5 y=-1 z=2
c)9y-(7y+z)+(6x-7y) dla x=-2 y=3
d)(6a-8b-0.7)-(6,9+a-5b)+1,8 dla a=0.2 b=0.1
e)1/2abc-(4ab+2abc)+(-bc+5ab) dla a=-2 b=1/2 c=-4
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a) -y+8x-z-2x dla x=-2 y=6 z=-3
b) -8y-4z+x-y-2z+1 dla x=-0,5 y=-1 z=2
c) 9y-(7y+z)+(6x-7y) dla x=-2 y=3
d) (6a-8b-0,7)-(6,9+a-5b)+1,8 dla a=0.2 b=0,1
e) 1/2abc-(4ab+2abc)+(-bc+5ab) dla a=-2 b=1/2 c=-4
Zad 10
a)-y+8x-z-2x=-6+8*(-2)-(-3)-2*(-2)=-6-16+3+4=15
b)-8y-4z+x-y-2z+1=-8*(-1)-4*2+(-0,5)-(-1)-2*2+1=8-8-0,5+1-4=-3,5
c)9y-(7y+z)+(6x-7y)=9*3-(7*3+(-2))+(6*(-2)-7*3)=27-21+2-12-21=-25
d)(6a-8b-0,7)-(6,9+a-5b)-1,8=(6*0,2-0,1-0,7)-(6,9+0,2-5*0,1)-1,8=1,2-0,1-0,7-6,9-0,2+0,5=-6,2
e)1/2abc-(4ab+2abc)+(-bc+5ab)=1/2*(-2)*1/2*(-4)-(4*(-2)*1/2+2(-2)*1/2*(-4))+(-1/2*(-4)+5*(-2)*1/2)=-2-(4-6)+(2-5)=2-4-6+2-5=-11
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