Doprowadż do najprostszej postaci
a)-(2x+3)2+7-(4x-5)(5+4x),
b)(3x-1)3-2(x+1)(x+5)+7(4 -3x)2,
c) 5-(x+2)3+3(2x-5)2
a) -(2x+3)*2+7-(4x-5)(5+4x)=-(4x+6)+7-(20x+16x2-25-20x)=-4x-6+7-20x-16x2+25+20x=-4x+26-16x2
b) (3x-1)*3-2*(x+1)(x+5)+7*(4-3x)*2=9x-3-2(x2+5x+x+5)+(28-21)*2=9x-3-2x2-10x-2x-10+56-42=-3x+1-2x2
c) 5-(x+2)*3+3(2x-5)*2=5-(3x+6)+(6x-15)*2=5-3x-6+12x-30=-31+9x
Mam nadzieje że pomogłem.Pozdrawiam.
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a) -(2x+3)*2+7-(4x-5)(5+4x)=-(4x+6)+7-(20x+16x2-25-20x)=-4x-6+7-20x-16x2+25+20x=-4x+26-16x2
b) (3x-1)*3-2*(x+1)(x+5)+7*(4-3x)*2=9x-3-2(x2+5x+x+5)+(28-21)*2=9x-3-2x2-10x-2x-10+56-42=-3x+1-2x2
c) 5-(x+2)*3+3(2x-5)*2=5-(3x+6)+(6x-15)*2=5-3x-6+12x-30=-31+9x
Mam nadzieje że pomogłem.Pozdrawiam.