Doprowadź wyrażenia do najprostszej postaci:
a) (3x-4)(5x+1)-(3x-4)^+2(5x+1)^+(x-2)(x+2)=
b) (2a-5b)-4(2a+5b)^+(5b-3)(3b-2)-(2a-5)(2a+5)=
znak ^ oznacza podnoszenie do drugiej potęgi
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a) (3x-4)(5x+1)-(3x-4)^+2(5x+1)^+(x-2)(x+2)=15x²-23x-4-9x²+24x-16+50x²+20x+2+x²-4=57x²+21x-24
b) (2a-5b)-4(2a+5b)^+(5b-3)(3b-2)-(2a-5)(2a+5)=2a-5b-16a²-80ab-100b²+15b²-19b+6-4a²+25=-85b²-20a²-80ab+2a-24b+31