:Przeksztalc wyrazenia doprowadzajac do naprostszej postaci skorzystaj ze wzorow skoronego mnozenia
a)-3(2x-5)do kwadratu -(x-4)(x+4)+6(x+2)do kwadratu
b)(a-2b)do kawrdatu-3(3a-b)(3a+b)+10(2a+3b)do kwadratu
c)(2a-3b)(3b+3a)-2(a-3b)do kwadratu-(2a+b)do kwadratu
d)(x-5) do kwadratu-3(x-1)(x+1)-(2xdo kwadratu-1)+x(2x-3)
e)(4+x)(4-x)-2x(1-3x)+2(x+2)do kwadratu-4(x do kwadratu -1)
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a)-12x2+60x-75-x2+16+6x2+24x+24=-7x2+84x-35=-7(x2-12x+5)=-7(x2-2x-10x+5)=-7[x(x-2)+5(x-2)]=-7(x-2)(x+5)
b)a2-4ab+4b2-27a2+3b2+40a2+120ab+90b2=14a2+116ab+97b2
c)6a2-3ab-9b2-2a2+12ab-18b2-4a2-4ab-b2=5ab-28b2
d)x2-10x+25-3x2+3-2x2+1+2x2-3x=-2x2-13x+29
e)16-x2-2x+6x2+2x2+8x+8-4x2+4=3x2+6x+28