Ответ: d=25/144.
Объяснение:
36y²-5y+d=(6y)²-2*6y*√d+(√d)² ⇒
2*6*√d=5
12*√d=5
√d=5/12
(√d)²=(5/12)²
d=25/144 ⇒
36y²-5y+25/144=(6y)²-2*6*(5/12)*y+(5/12)²=(6y)²-5y+(5/12)²=(6y-(5/12))².
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Ответ: d=25/144.
Объяснение:
36y²-5y+d=(6y)²-2*6y*√d+(√d)² ⇒
2*6*√d=5
12*√d=5
√d=5/12
(√d)²=(5/12)²
d=25/144 ⇒
36y²-5y+25/144=(6y)²-2*6*(5/12)*y+(5/12)²=(6y)²-5y+(5/12)²=(6y-(5/12))².