5.7 Doprowadź do najprostszej postaci wyrażenie (4x²-6x+3)-(-2x²+5x+1). 5.8 Wykonaj mnożenie aaa- tzn razy 0/0 , 2/3 - tzn zero zerowych /dwie trzecie a ) -2 aaa (1-x) b ) - 2/3 aaa (3x-6) c ) (x-8y) aaa (- 1/2 ) d ) (100x-20y)aaa0,01
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5.7.
(4x^2-6x+3)-(-2x^2+5x+1) = 4x^2-6x+3+2x^2-5x-1 = 6x^2 -11x +2
5.8. nie rozumiem ;D
5.7
(4x²-6x+3)-(-2x²+5x+1)=4x²-6x+3+2x²-5x-1=6x²-6x+3-5x-1=6x²-11x+3-1=6x²-11x+2
5.8
a) -2*(1-x)= -(2-2x)= -2+2x
b) - 2/3*(3x-6)= -(2x-4)= -2x+4
c ) (x-8y)*(- 1/2 )=(x-8y)(-0,5)= -(x-8y)*0,5= -(x*0,5-4y)= -x*0,5+4y
d) (100x-20y)*0,01=x-0,2y