temat;wyrażenia algebraiczne;)
a)8* (¾x-1)+(-15x+5x):(-5)-(-3x+2)*(2+x)= dla x=⅓
b)-4*(¼x-⅝)+(16x²-8x):(-4x)+(-1)*(2+x)= dla x=1.5
;)
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a) 8*(3/4 * 1/3 -1)+(-15 * 1/3 + 5 * 1/3):(-5)-(-3 *1/3 +2)*(2 + 1/3)=
8*(-3/4)+(-10/3):(-5)-(1)*(2+1/3)=-6-10/3 * (-1/5)-2-1/3=
-6+2/3-2-1/3= -7 i 2/3
b) -4*(1/4*1.5-5/8)+(16*(1.5)²-8*1.5):(-4*1.5)+(-1)*(2+1.5)=
-4*(-2/8)+(36-12):(-6)-3.5 = 1+24:(-6)-3.5 = 1-4-3.5 = -6.5