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Efectuati:
3a +7b-(5a-b)
[tex]( 2x^{3} ) × (3 x^{5} )[/tex]
6x ×8y
2(x+4)-3(x-1)+2
[tex]5 x^{4} ÷ \sqrt{5x}^{2} [/tex]


Răspuns :

3a+7b-5a+b=-2a+8b.;;; 6x la puterea 8.::::6xX8y=48xy.;;;;2x+8-3x+3+2=-x+13:::: 5x la puterea4:5x=x la puterea3