x uchun yechish
x=60
x=0
Grafik
Baham ko'rish
Klipbordga nusxa olish
60x-x^{2}=0
Ikkala tarafdan x^{2} ni ayirish.
x\left(60-x\right)=0
x omili.
x=0 x=60
Tenglamani yechish uchun x=0 va 60-x=0 ni yeching.
60x-x^{2}=0
Ikkala tarafdan x^{2} ni ayirish.
-x^{2}+60x=0
ax^{2}+bx+c=0 shaklidagi barcha tenglamalarni kvadrat formulasi bilan yechish mumkin: \frac{-b±\sqrt{b^{2}-4ac}}{2a}. Kvadrat formula ikki yechmni taqdim qiladi, biri ± qo'shish bo'lganda, va ikkinchisi ayiruv bo'lganda.
x=\frac{-60±\sqrt{60^{2}}}{2\left(-1\right)}
Ushbu tenglama standart shaklidadir: ax^{2}+bx+c=0. Kvadrat tenglama formulasida, \frac{-b±\sqrt{b^{2}-4ac}}{2a} -1 ni a, 60 ni b va 0 ni c bilan almashtiring.
x=\frac{-60±60}{2\left(-1\right)}
60^{2} ning kvadrat ildizini chiqarish.
x=\frac{-60±60}{-2}
2 ni -1 marotabaga ko'paytirish.
x=\frac{0}{-2}
x=\frac{-60±60}{-2} tenglamasini yeching, bunda ± musbat. -60 ni 60 ga qo'shish.
x=0
0 ni -2 ga bo'lish.
x=-\frac{120}{-2}
x=\frac{-60±60}{-2} tenglamasini yeching, bunda ± manfiy. -60 dan 60 ni ayirish.
x=60
-120 ni -2 ga bo'lish.
x=0 x=60
Tenglama yechildi.
60x-x^{2}=0
Ikkala tarafdan x^{2} ni ayirish.
-x^{2}+60x=0
Bu kabi kvadrat tenglamalarni kvadratni yakunlab yechish mumkin. Kvadratni yechish uchun tenglama avval ushbu shaklda bo'lishi shart: x^{2}+bx=c.
\frac{-x^{2}+60x}{-1}=\frac{0}{-1}
Ikki tarafini -1 ga bo‘ling.
x^{2}+\frac{60}{-1}x=\frac{0}{-1}
-1 ga bo'lish -1 ga ko'paytirishni bekor qiladi.
x^{2}-60x=\frac{0}{-1}
60 ni -1 ga bo'lish.
x^{2}-60x=0
0 ni -1 ga bo'lish.
x^{2}-60x+\left(-30\right)^{2}=\left(-30\right)^{2}
-60 ni bo‘lish, x shartining koeffitsienti, 2 ga -30 olish uchun. Keyin, -30 ning kvadratini tenglamaning ikkala tarafiga qo‘shing. Ushbu qadam tenglamaning chap qismini mukammal kvadrat sifatida hosil qiladi.
x^{2}-60x+900=900
-30 kvadratini chiqarish.
\left(x-30\right)^{2}=900
x^{2}-60x+900 omili. Odatda, x^{2}+bx+c mukammal kvadrat bo'lsa, u doimo \left(x+\frac{b}{2}\right)^{2} omil sifatida bo'lishi mumkin.
\sqrt{\left(x-30\right)^{2}}=\sqrt{900}
Tenglamaning ikkala tarafining kvadrat ildizini chiqarish.
x-30=30 x-30=-30
Qisqartirish.
x=60 x=0
30 ni tenglamaning ikkala tarafiga qo'shish.
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