спростіть вираз (b+7)²- b (b-2)

Спільнокореневі слова до слова Бабусі,татусі

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охайний вродливий

WORLD Heritage Convention- the convention concerning the protection of the world cultural and natural heritage;it was adopted by the UNESCO General Conference in Paris in 1972.The world Heritage Convention aims to promote cooperation among nations to protect heritage around the world that is of such outstanding universal value that its conservation is important for current and future generations.It is intended that,unlike the seven wonders of the ancient world,properties on the WORLD Heritage List will be conserved for all time.