przedstaw wyrażenie w postaci sumy algebraicznej
(3y-4)(5y+1)-(3y-4)²+2(5y+1)²+(y-2)×(y+2)
(3y-4)(5y+1)-(3y-4)²+2(5y+1)²+(y-2)*(y+2) =
= 15y^2+3y-20y-4-9y^2+24y-16+50y^2+20y+2+y^2-4 =
= (15-9+50+1)y^2 + (3-20+24+20)y + (-4-16+2-4) =
= 57y^2+27y-22
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(3y-4)(5y+1)-(3y-4)²+2(5y+1)²+(y-2)*(y+2) =
= 15y^2+3y-20y-4-9y^2+24y-16+50y^2+20y+2+y^2-4 =
= (15-9+50+1)y^2 + (3-20+24+20)y + (-4-16+2-4) =
= 57y^2+27y-22