Doprowadz do najprostszej postaci :
5(2x-4)²-x²-9+(x+3)²=
5(4x²-16x+16)-x²-9+x²+6x+9=
20x²-80x+80-x²-9+x²+6x+9=
20x²-74x-80
======================================
(2a-4b)²-2ab²-4b²+3(2a-b)(2a+b)+5=
4a²-32ab+16-2ab²-4b²+3(4a²+2ab-2ab+b²)+5=
4a²-32ab+16-2ab²-4b²+12a²+6ab-6ab+3b²+5=
16a²-b²-2ab²-32ab+21
=======================================
(8x+3)(8x-3)+(6x+2)²-4(2x+7)=
64x²-24x+24x+9+36x²+24x+4-8x-28=
100x²-16x-15
2x(x²-2x+5)-4x²(x²-2x+5)+10x³=
2x³-4x²+10-4x⁴+8x³-20x²+10x³=
-4x⁴+10x³-24x²+10
w razie wątpliwości pisz na PW
a!) =5(4x-8)-2x-9+2x+6=20x-40-2x-9+2x+6=20x-43
B!) =4a-8b-4ab-8b+3(4a2+ab-2ab-b2)+5=
=16ab+4a-4ab+12a2+6ab-6ab-3b2+5=
=-20ab+4a+9a2+5
C!) =64x2-24x+24x+12x+4-8x-28=64x2+4x-24
D!) =4x2-4x2+10x-8x2+16x2+40+30x=8x2+40x+40
JAK JEST 4x2 TO TA 2 PO IKSIE TO ZNACZY DO KWADRATU
PROSZE
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5(2x-4)²-x²-9+(x+3)²=
5(4x²-16x+16)-x²-9+x²+6x+9=
20x²-80x+80-x²-9+x²+6x+9=
20x²-74x-80
======================================
(2a-4b)²-2ab²-4b²+3(2a-b)(2a+b)+5=
4a²-32ab+16-2ab²-4b²+3(4a²+2ab-2ab+b²)+5=
4a²-32ab+16-2ab²-4b²+12a²+6ab-6ab+3b²+5=
16a²-b²-2ab²-32ab+21
=======================================
(8x+3)(8x-3)+(6x+2)²-4(2x+7)=
64x²-24x+24x+9+36x²+24x+4-8x-28=
100x²-16x-15
=======================================
2x(x²-2x+5)-4x²(x²-2x+5)+10x³=
2x³-4x²+10-4x⁴+8x³-20x²+10x³=
-4x⁴+10x³-24x²+10
w razie wątpliwości pisz na PW
a!) =5(4x-8)-2x-9+2x+6=20x-40-2x-9+2x+6=20x-43
B!) =4a-8b-4ab-8b+3(4a2+ab-2ab-b2)+5=
=16ab+4a-4ab+12a2+6ab-6ab-3b2+5=
=-20ab+4a+9a2+5
C!) =64x2-24x+24x+12x+4-8x-28=64x2+4x-24
D!) =4x2-4x2+10x-8x2+16x2+40+30x=8x2+40x+40
JAK JEST 4x2 TO TA 2 PO IKSIE TO ZNACZY DO KWADRATU
PROSZE