Dane wyrażenie algebraiczne doprowadź do najprostszej postaci i oblicz jego wartość dla podanej wartości x: A.(5x-4)(5x+4)+(3x+1)²-(1-3x)²-10(3x²+2)-100 ; x= -2 B.(1-4x)²-(1-2x)(2x+1)-(2x-3)²+5(3x²+4) ; x= -1 C.3(2-3x)²-3(2+3x)²-5(x²+3)+(1-2x)(1+2x) ; x= -1/3 D.(2x-5)²+(x+2)(x-2)-(2x+1)²-8(x²-4x)+4x ; x= -1/3 E.(1-4x)(1+4x)+(3x+5)²-(5-3x)²-4(2x²-1) ; x= -1/2 F.(1-2x)(1+2x)-(2-5x)²-(5x+2)²+10(3x²-5) ; x= -1/2 G.(x+2)²-(1-3x)(3x+1)-4(2x²-5x)+2(x-2)² ; x= -1/2 H.(x-5)²+(2-5x)(5x+2)-3(8x²+7x)-(2x+3)²+3x ; x= -1/2 I.1/2(x-2)²+1/3(2x-3)(3+2x)-(x+3)²-1/2(3x²+5)+0,5 ; x= -3 J.1/3(1+2x)²-1/2(1-3x)(3x+1)-2x(x-3)+1/6(3-2x)² ; x= -1
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A. -5x^2+12x-126
dla x=-2
-5(-2)^2+12(-2) -126= -20-6-126= -152
B. 6x+31x^2+11
dla x=-1
6(-1)+31(-1)^2+11= -6+31+11= 36
C.-12x-9x^2-8
dla x= - 1/3
-12(-1/3) - 9*(-1/3)^2-8= 4 -1-8= -5
D. -7x^2+8x+20
dla x=-1/3
-7(-1/3)^2 +8*(-1/3)+20= -7/9-8/3+20= 16 5/9
E.-22x^2 +60x+5
dla x=-1/2
-22(-1/2)^2+60*(-1/2) +5= -5 1/2-30+5=-30 1/2
F. -24x^2-57
dla x=- 1/2
-24(-1/2)^2-57= -8-57= -65
G. 4x^2+16x+11
dla x= -1/2
4(-1/2)^2 +16(-1/2)+11= 1-8+11=4
H.-48x^2-20x-5
dla x=-1/2
-48(-1/2)^2-20(-1/2)-5= -12+10-5= -7
I. -1 5/6x^2-8x-13
dla x=-1
-1 5/6(-1)^2 -8*(-1) - 13= -1 5/6+8-13= -18 5/6
J. 9 1/3x+ 4 1/6x^2+1 2/6
dla x=-1
-9 1/3+4 1/6+1 2/6= - 3 5/6