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Fmacafei
a fost răspuns

Efectueaza,reducand termenii asemenea:
a) 36-9x+27x+15
b)43x-8y+2-24x+18x-9
c)√20a -3√200b-3√125b+√700a
d)√2197x+10+3√52-7-2√208x
e)3x²+6+5x+(-9x²)-4x-12
f)14x²+7+3x+(-9x²)-6x-15