49р^2+70рt+25t^2 / 7p+5t= (7p+5t)^2 / 7p+5t= 7p+5t
Если р= -2, t=3, то 7•(-2)+5•3= -14+15=1
Ответ: 1
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49р^2+70рt+25t^2 / 7p+5t= (7p+5t)^2 / 7p+5t= 7p+5t
Если р= -2, t=3, то 7•(-2)+5•3= -14+15=1
Ответ: 1