(3a+2b-6) + (5a-b+2)
(8a-6a+7)-5(4a-2)
(a-2b)(2a-b) - (3a+b) (a-3b)
3a(b+6) -b(b+6)
prosze na zaraz ;D Pijak
(3a+2b-6) + (5a-b+2) = 3a + 2b - 6 + 5a -b + 2 = 8a +b -4
(8a-6a+7)-5(4a-2) = 2a + 7 -20a + 10 = 17 -18a
(a-2b)(2a-b) - (3a+b) (a-3b) = 2a²-ab -4ab+2b² -(3a² -9ab + ab - 3b²)=
= 2a² + 2b² -5ab - 3a²+9ab-ab+3b² = -a²+5b²+3ab
3a(b+6) -b(b+6) = 3ab + 18a - b² -6b
Mam nadzieje , że pomogłam ; )
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(3a+2b-6) + (5a-b+2) = 3a + 2b - 6 + 5a -b + 2 = 8a +b -4
(8a-6a+7)-5(4a-2) = 2a + 7 -20a + 10 = 17 -18a
(a-2b)(2a-b) - (3a+b) (a-3b) = 2a²-ab -4ab+2b² -(3a² -9ab + ab - 3b²)=
= 2a² + 2b² -5ab - 3a²+9ab-ab+3b² = -a²+5b²+3ab
3a(b+6) -b(b+6) = 3ab + 18a - b² -6b
(3a+2b-6) + (5a-b+2) = 3a + 2b - 6 + 5a -b + 2 = 8a +b -4
(8a-6a+7)-5(4a-2) = 2a + 7 -20a + 10 = 17 -18a
(a-2b)(2a-b) - (3a+b) (a-3b) = 2a²-ab -4ab+2b² -(3a² -9ab + ab - 3b²)=
= 2a² + 2b² -5ab - 3a²+9ab-ab+3b² = -a²+5b²+3ab
3a(b+6) -b(b+6) = 3ab + 18a - b² -6b
Mam nadzieje , że pomogłam ; )